HP Hewlett Packard Personal Computer dx5150 User Manual

service reference guide  
hp business desktop dx5150 series  
1st edition  
This document provides information on the removal and replacement of all  
parts as well as information on troubleshooting, Desktop Management, setup  
utilities, PATA and SATA drives, safety, routine care, connector pin  
assignments, POST error messages, and diagnostic indicator lights.  
Document Part Number 361685-001  
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Service Reference Guide  
HP Business Desktop dx5150 Series  
1st Edition  
Document Part Number: 361685-001  
April 2005  
Download from Www.Somanuals.com. All Manuals Search And Download.  
© Copyright 2005 Hewlett-Packard Development Company, L.P.  
The information contained herein is subject to change without notice.  
Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and other  
countries.  
Intel is a trademark of Intel Corporation in the U.S. and other countries.  
Adobe, Acrobat, and Acrobat Reader are trademarks or registered trademarks of Adobe Systems Incorporated.  
The only warranties for HP products and services are set forth in the express warranty statements accompanying  
such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall  
not be liable for technical or editorial errors or omissions contained herein.  
This document contains proprietary information that is protected by copyright. No part of this document may be  
photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard  
Company.  
WARNING: Text set off in this manner indicates that failure to follow directions could result in bodily  
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harm or loss of life.  
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage  
to equipment or loss of information.  
Service Reference Guide  
HP Business Desktop dx5150 Series  
First Edition (April 2005)  
Document Part Number: 361685-001  
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Contents  
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1
Installing the Operating System  
CAUTION: Do not add optional hardware or third-party devices to your computer until the operating  
system is successfully installed. Doing so may cause errors and may prevent the operating system from  
installing properly.  
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CAUTION: Once the automatic installation has begun, DO NOT TURN OFF THE COMPUTER UNTIL  
THE PROCESS IS COMPLETE. Turning off the computer during the installation process might damage the  
software that runs the computer or prevent its proper installation.  
The first time the computer is turned on, the operating system is automatically installed. This  
takes approximately 10 minutes, depending on the system hardware configuration. At the  
beginning of the installation process, you are prompted to select the appropriate language for the  
operating system. Read and follow the instructions that appear on the screen to complete the  
installation. During this process, do not turn off your computer unless you are directed to do so.  
If the computer shipped with more than one operating system language on the hard drive, the  
installation process could take up to 60 minutes.  
1.1 Installing or Upgrading Device Drivers  
To install hardware devices such as a printer, a display adapter, or network adapter after the  
operating system installation is completed, the operating system needs access to the appropriate  
software drivers for the devices.  
If prompted for the I386 directory, replace the path specification with C:\i386, or click Browse in  
the dialog box to locate the i386 folder. This action points the operating system to the appropriate  
drivers.  
Obtain the latest support software, including support software for the operating system from  
www.hp.com. Click support & drivers, select Download drivers and software, enter the model  
number of the computer, and press Enter.  
You can also obtain the latest support software on CD. The following Web site provides  
information about purchasing a support software CD subscription:  
If the computer has an optical CDRW drive, install the appropriate application to allow you to  
write to the drive. To install the application, double-click the Setup Software icon on the desktop  
or the application launcher and select the Easy CD Creator and Direct CD options when  
prompted.  
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Installing the Operating System  
1.2 Transferring Files and Settings  
Use the Microsoft Windows XP Files and Settings Transfer Wizard to move files and settings  
from an old computer to a new one. Click Start > All Programs > Accessories > System Tools  
> Files and Settings Transfer Wizard.  
1.3 Backing Up and Restoring Files  
1.3.1 Creating a Backup File—Windows XP Professional  
1. Click Start > All Programs > Accessories > System Tools > Backup.  
2. Use the Backup or Restore Wizard to create a backup file or tape.  
You can save a backup file to a hard disk, a floppy disk, CD, USB flash media device, tape drive,  
or to any other removable or nonremovable media.  
1.3.2 Restoring from the Backup File—Windows XP Professional  
1. Click Start > All Programs > Accessories > System Tools > Backup.  
2. Use the Backup or Restore Wizard to restore files from a backup file.  
A backup file can be saved on a hard disk, a floppy disk, CD, USB flash media device, tape drive,  
or any other removable or nonremovable media.  
1.4 Converting to NTFS  
Windows XP Professional  
To convert a FAT or FAT32 volume to NTFS,  
1. Click Start > All Programs > Accessories > Command Prompt.  
2. Type convert drive_letter: /fs:ntfs (where drive_letter is the volume to be converted) and  
press Enter.  
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Installing the Operating System  
1.5 HP Software  
The Microsoft Windows XP Professional operating system is preinstalled on the computer and  
will be configured automatically the first time the computer is turned on. The following HP  
software may also be installed at that time on selected models:  
Computer Setup Utilities  
HP Support Software including device drivers  
Configuration Record  
Online Safety & Comfort Guide  
Power Management with energy saver features  
Security Management tools  
Software Support Management tools  
Certain drivers and utilities are available only in selected languages. You can obtain the latest  
version of these files, in English and selected other languages, in one of three ways:  
Support Software CD  
HP Web site at www.hp.com  
Restore Plus! CD, which is supplied with many HP models  
Additional HP software may be required in certain situations.  
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Installing the Operating System  
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2
Setup Utilities and Diagnostics Features  
Setup Utilities (F10) and diagnostic features provide information needed about the computer  
system when contacting Customer Support. You can also use these tools to:  
Change factory default settings and to set or change the system configuration, which may be  
necessary when you add or remove hardware.  
Determine if all of the devices installed on the computer are recognized by the system and  
are functioning properly.  
Determine information about the operating environment of the computer.  
Solve system configuration errors detected but not automatically fixed during the Power-On  
Self-Test (POST).  
Establish and manage passwords and other security features.  
Establish and manage energy-saving timeouts.  
All features identified in this chapter may not be available on all HP products.  
2.1 Power-On Self-Test (POST)  
POST is a series of diagnostic tests that runs automatically when the system is turned on. POST  
checks the following items to ensure that the computer system is functioning properly:  
Keyboard  
Memory modules  
Diskette drives  
All mass storage devices  
Processors  
Controllers  
If the Power-On Password is set, a text box password prompt appears on the screen while POST  
is running. You must enter the password before continuing. Refer to Chapter 3, Section 3.1,  
“Initial Configuration and Deployment.” for information on setting, deleting, or bypassing the  
password.  
If POST finds an error in the system, an audible and/or visual message occurs. For POST error  
messages and their solutions, refer to Appendix C, “POST Error Messages.”  
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Setup Utilities and Diagnostics Features  
2.2 Computer Setup (F10) Utilities  
Use Computer Setup (F10) Utility to do the following:  
Change factory default settings.  
Set the system date and time.  
Set, view, change, or verify the system configuration, including settings for processor,  
graphics, memory, audio, storage, communications, and input devices.  
Modify the boot order of bootable devices such as hard drives, diskette drives, optical drives,  
or USB flash media devices.  
Enable or disable Quick Power-On Self Test, which is faster than a full boot but does not run  
all of the diagnostic tests run during a full boot.  
Enter the Asset Tag or property identification number assigned by the company to this  
computer.  
Establish a supervisor password that controls access to Computer Setup (F10) Utility and the  
settings described in this section.  
Secure integrated I/O functionality, including the serial, USB, or parallel ports, audio, or  
embedded NIC, so that they cannot be used until they are unsecured.  
Enable or disable Master Boot Record (MBR) Security.  
Enable or disable removable media boot ability.  
Enable or disable legacy diskette write ability (when supported by hardware).  
2.2.1 Using Computer Setup (F10) Utilities  
You can only access Computer Setup by turning the computer on or restarting the system.  
To access the Computer Setup Utilities menu, complete the following steps:  
1. Turn on or restart the computer. If you are in Microsoft Windows, click Start >  
Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter  
Computer Setup.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
3. The Computer Setup Utility screen is divided into seven menu headings:  
System Information  
Standard CMOS Features  
Advanced BIOS Features  
Advanced Chipset Features  
Integrated Peripherals  
Power Management Setup  
PnP/PCI Configurations  
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Setup Utilities and Diagnostics Features  
Six action choices are listed on the Computer Setup Utility screen:  
PC Health Status  
Load Optimized Defaults  
Set Supervisor Password  
Set User Password  
Save & Exit Setup  
Exit Without Saving  
Use the arrow keys to select the appropriate heading, and then press Enter. Use the arrow  
(up and down) keys to select the option you want, and then press Enter. To return to the  
previous screen, press Esc.  
4. To apply and save changes, press F10 or select Save & Exit Setup on the Computer Setup  
Utility screen and press Enter.  
If you have made changes that you do not want applied, select Exit Without Saving and  
press Enter.  
CAUTION: Do NOT turn computer power OFF while the ROM is saving F10 Computer Setup changes  
because the CMOS could become corrupted. It is safe to turn off the computer only after exiting the F10  
Setup screen.  
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Setup Utilities and Diagnostics Features  
2.2.2 Computer Setup Menu  
Computer Setup  
Heading  
Option  
Description  
System  
Information  
Displays  
Product Name  
Processor Type  
Cache Size  
Memory Size  
System ROM  
Integrated MAC  
UUID  
System Serial #  
Asset Tracking Number  
Enter Asset Tag No.  
Standard  
CMOS  
Features  
Date (mm:dd:yy)  
Time (hh:mm:ss)  
Allows you to set system date.  
Allows you to set system time.  
IDE Channel 0 Master  
IDE Channel 0 Slave  
SATA IDE Channel 1  
Master  
SATA IDE Channel 2  
Master  
For each, allows you to:  
• HDD Self-Test (SATA only)  
SMART Status Check  
HDD Short Self-Test  
HDD Extended Self-Test  
• IDE Auto-Detection  
• Extended IDE Drive  
• None  
• Auto  
• Access Mode  
• CHS (PATA only)  
• LBA (PATA only)  
• Large  
• Auto  
Drive A  
Halt On  
Identifies the highest capacity media type accepted by  
the diskette drive.  
Allows you to set at:  
• All Errors  
• No Errors  
• All, but Keyboard  
• All, but Diskette  
• All, but Diskette/Keyboard  
POST Delay  
Allows you to set a POST delay.  
Support for specific Computer Setup options may vary depending on the hardware configuration.  
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Setup Utilities and Diagnostics Features  
Computer Setup (Continued)  
Heading  
Option  
Description  
Advanced  
BIOS Features  
Removable Device Boot  
Seq.  
Allows you to specify the order in which attached devices  
(such as an FDD, an LS120, or a Zip Drive) are checked  
for a bootable operating system image.  
Hard Disk Boot Seq.  
Allows you to specify the order of attached hard drive  
devices (such as USB HDD storage, USB2 DriveKey, or  
USB flash media). The first drive in the order has priority  
in the boot sequence and is recognized as drive C (if any  
devices are attached).  
CD-ROM Boot Seq.  
Network Boot Seq.  
MBR Security  
Allows you to specify the order in which attached  
CD-ROM drives (including USB ODD) are checked for a  
bootable operating system image.  
Allows you to specify the order in which network devices  
(including UP NIC cards) are checked for a bootable  
operating system image.  
Enables/disables the VIRUS warning feature for IDE Hard  
Disk boot sector protection.  
When this function is enabled and someone attempts to  
write data into this area, the BIOS responds with a  
warning message on screen and an alarm beep.  
Quick Power On Self Test  
Enables/disables the system to skip certain tests while  
booting.  
Enabling this feature decreases the time required to boot  
the system.  
First Boot Device  
Allows you to specify which devices will boot first,  
second, third, and fourth.  
Second Boot Device  
Third Boot Device  
Fourth Boot Device  
MS-DOS drive lettering assignments may not apply  
after a non-MS-DOS operating system has started.  
Boot Up NumLock Status  
Security Option  
Allows you to set the default NumLock status on or off.  
Allows you to set to either Always or Setup.  
Enables/disables the APIC support.  
APIC Mode  
MPS Version Control for  
OS  
Allows you to set the MPS version for the OS.  
HDD S.M.A.R.T. Capability Enables/disables SMART capability on the hard drive.  
ASF Support  
Enables/disables ASF  
BIOS Write Protection  
UMA Frame Buffer Size  
Enables/disables BIOS write protection.  
Allows you to set the size of the UMA frame buffer.  
Advanced  
Chipset  
Features  
Support for specific Computer Setup options may vary depending on the hardware configuration.  
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Setup Utilities and Diagnostics Features  
Computer Setup (Continued)  
Heading  
Option  
Description  
Advanced  
Chipset  
Video Display Devices  
Allows you to set to:  
• Auto  
Features  
• CRT only  
(continued)  
• DFP only  
• CRT Force, DFP Auto  
Init Display First  
Surroundview  
Allows you to select the primary VGA source.  
Allows you to enable/disable Surroundview only if PCI-E  
GFX add-on card is ATI. Provides support for up to three  
independent monitors (available with the unified drivers).  
Auto Detect PCI Clk  
Spread Spectrum  
Enables/disables PCI Clk auto detection.  
Enables/disables spread spectrum.  
Integrated  
Peripherals  
South OnChip PCI Device  
Allows you to enable/disable:  
• On Chip IDE Controller  
• Onboard AC97 Audio  
• Onboard Chip SATA  
• SATA Disabled  
• IDE Controller (non-RAID)  
• RAID Controller  
• Onboard LAN  
• Onboard LAN Boot ROM  
OnChip USB Controller  
USB Legacy Support  
Front Panel USB Port  
Enables/disables the USB controller.  
Enables or disables the USB Legacy feature.  
Enables/disables the front panel USB port and the two  
USB ports located on the back of the computer under the  
NIC connector.  
Onboard FDC Controller  
Onboard Serial Port  
Enables/disables onboard FDC controller.  
Allows you to disable or select setting for the onboard  
serial port.  
Onboard Parallel Port  
Allows you to disable or select setting for onboard  
parallel port.  
Parallel Port Mode  
Allows you to select parallel port mode.  
ECP Mode Use DMA  
If Parallel Port Mode is set to ECP or ECP+EPP, allows you  
to set the ECP Mode Use DMA to 1 or 3.  
Power  
ACPI Function  
Enables/disables ACPI functions.  
Management  
Setup  
ACPI Suspend Type  
Allows you to set type of ACPI suspend.  
MODEM Use IRQ  
Select IRQ for the device.  
Support for specific Computer Setup options may vary depending on the hardware configuration.  
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Setup Utilities and Diagnostics Features  
Computer Setup (Continued)  
Heading  
Option  
Description  
Power  
After AC Power Loss  
Allows you to select:  
• Last State  
• On  
Management  
Setup  
(continued)  
• Off  
PowerOn by PCI Card  
AMD Cool’n’Quiet  
Enables/disables capability of powering on by PCI card.  
Allows you to set the AMD Cool’n’Quiet to auto or to  
disable it.  
RTC Alarm Resume  
Date (of Month)  
Enables/disables resumption of RTC alarm.  
If RTC Alarm Resume is enabled, allows you to select the  
day of the month for resumption of RTC alarm.  
Resume Time (hh:mm:ss)  
Reset Configuration Data  
If RTC Alarm Resume is enabled, allows you to select  
what time the RTC alarm will resume.  
PnP/PCI  
Configurations  
Enables/disables automatic reconfiguration.  
Default is Disabled. Select Enabled to reset Extended  
System Configuration Data (ESCD) when you exit Setup,  
if you have installed a new add-on and the system  
reconfiguration has caused such a serious conflict that the  
OS cannot boot.  
Resources Controlled By  
Allows you to select whether resources are controlled  
automatically or manually.  
BIOS can automatically configure all the boot and  
Plug-and-Play-compatible devices. If you choose Auto,  
you cannot select IRQ DMA and memory base address  
fields, since BIOS automatically assigns them.  
IRQ Resources  
When resources are controlled manually, allows you to  
assign each system interrupt a type, depending on the  
type of device using the interrupt.  
Legacy ISA for devices compliant with the original PC AT  
bus specification, PCI/ISA PnP for devices compliant with  
the Plug and Play standard whether designed for PCI or  
ISA bus architecture.  
• IRQ-3 assigned to  
• IRQ-4 assigned to  
• IRQ-5 assigned to  
• IRQ-7 assigned to  
• IRQ-10 assigned to  
• IRQ-11assigned to  
• IRQ-12assigned to  
• IRQ-14assigned to  
• IRQ-15assigned to  
Assign IRQ for VGA  
Assign IRQ for USB  
Enables/disables capability of assigning IRQ for VGA.  
Enables/disables capability of assigning IRQ for USB.  
Support for specific Computer Setup options may vary depending on the hardware configuration.  
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Setup Utilities and Diagnostics Features  
Computer Setup (Continued)  
Heading  
Option  
Description  
PC Health  
Status  
System Information  
Lists:  
• CPU Temperature  
• System Temperature  
• CPU Fan Speed  
• System Fan Speed  
• System Fan Fail Check (enable/disable)  
• Fan Control (auto/disable)  
Load  
Allows you to reset Computer Setup to factory defaults.  
Optimized  
Defaults  
Set Supervisor  
Password  
Allows you to establish a password to control access to  
Computer Setup. Allows you to boot computer and  
change Computer Setup.  
Set User  
Password  
Allows you to establish a password to control access to  
the computer. Allows you to boot the computer and view  
Computer Setup.  
Save & Exit  
Setup  
Allows you to save current settings and exit Computer  
Setup.  
Exit Without  
Saving  
Allows you to exit Computer Setup without saving  
changes.  
Support for specific Computer Setup options may vary depending on the hardware configuration.  
2.3 Recovering the Configuration Settings  
Recovering the configuration settings established in the Computer Setup (F10) Utility requires  
that you first back up the settings before a recovery is needed.  
The CMOS Save/Load utility ROMPAQ can be found at http://www.hp.com under the support  
and drivers for the HP Business Desktop dx5150. Download the ROMPAQ files into a folder on  
a removable storage device. It is recommended that you save any modified computer  
configuration settings to a diskette, a USB flash media device, or a diskette-like device (a storage  
device set to emulate a diskette drive), and save the diskette or device for possible future use.  
2.3.1 Backing up the CMOS  
1. Make sure the computer you want to back up is turned on. Connect the removable storage to  
the computer.  
2. In Windows, click Start > Run, type CMD, and click OK to open a DOS  
command window.  
3. Type N:\folder\BIOS.exe SAVE:ABC001.DAT (where N is the drive letter of the  
removable storage) to save the CMOS setting to the removable storage device.  
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Setup Utilities and Diagnostics Features  
2.3.2 Restoring the CMOS  
1. Make sure the target computer is turned on. Connect the removable storage to the  
target computer.  
2. In Windows, click Start > Run, type CMD, and click OK. to open a DOS  
command window.  
3. Type N:\folder\BIOS.exe LOAD:ABC001.DAT (where N is the drive letter of the  
removable storage) to load the custom CMOS setting onto the target system.  
2.4 Diagnostics for Windows  
The Diagnostics for Windows (DFW) utility allows you to view information about the hardware  
and software configuration of the computer while running Microsoft Windows XP. It also allows  
you to perform hardware and software tests on the subsystems of the computer.  
When you invoke Diagnostics for Windows, the current configuration of the computer is shown  
on the Overview screen. There is access from this screen to several categories of information  
about the computer and the Test tab. You can save to a file or print the information in every  
screen of the utility.  
To test all subsystems, you must log in as the administrator. If you do not log in as the  
administrator, you will be unable to test some subsystems. The inability to test a subsystem is  
indicated by an error message under the subsystem name in the Test window or by shaded check  
boxes that you cannot select.  
Use Diagnostics for Windows in the following instances to:  
Determine if all the devices installed on the computer are recognized by the system and  
functioning properly. Running tests is optional but recommended after installing or  
connecting a new device.  
Third party devices not supported by HP may not be detected. Save, print, or display the  
information generated by the utility.  
2.4.1 Detecting Diagnostics for Windows  
Some computers ship with the Diagnostics for Windows preloaded, but not preinstalled.  
To determine whether Diagnostics for Windows is installed:  
1. Access the location of the Diagnostics icons in Windows XP Home or Windows XP  
Professional by selecting Start > Control Panel > Performance and Maintenance.  
2. If icons for Configuration Record and Diagnostics for Windows are present, the Diagnostics  
for Windows utility is installed. If the icons are not present, the utility is either not preloaded  
or not installed.  
2.4.2 Installing Diagnostics for Windows  
If Diagnostics for Windows is not preloaded, you can download the Diagnostics for Windows  
SoftPaq from the following Web site:  
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Setup Utilities and Diagnostics Features  
Once you download the software onto the hard drive, install the software as follows:  
1. Close all Windows applications.  
2. Install the Diagnostics for Windows utility:  
In Windows XP, select Start > Setup Software icon. Select Diagnostics for Windows,  
click Next, then follow the instructions on the screen.  
If the Setup Software icon is not on the Desktop or on the Start menu, run the Setup  
program from the C:\CPQAPPS\DIAGS directory or select Start > Run and type the  
following in the command line: C:\CPQAPPS\DIAGS\SETUP.  
3. Click Next to install Diagnostics for Windows.  
4. After the program has finished installing, you may be prompted to restart the computer, or  
the computer may automatically restart. If prompted, click Finish to restart the computer or  
Cancel to exit the program. You must restart the computer to complete the installation of  
Diagnostics for Windows.  
If you want to upgrade an existing version of Diagnostics for Windows installed on the  
computer, visit http://www.hp.com/support/files and click on an applicable product. Locate the  
desired software and download the latest version. Execute the downloaded file and select Repair  
to update the installed version. This will cause the new version to overwrite the old version.  
2.4.3 Using Categories in Diagnostics for Windows  
To use categories:  
1. Click Start > HP Information Center > Diagnostics for Windows. You can also select the  
Diagnostics for Windows icon, located in the Control Panel.  
The screen displays the overview of the computer hardware and software.  
In Windows 2000 Professional, select Start > Settings > Control Panel, then select  
Diagnostics for Windows.  
In Windows XP Home and Windows XP Professional, select Start > Control Panel >  
Performance and Maintenance, then select Diagnostics for Windows.  
2. For specific hardware and software information, select a category from the Categories  
pull-down menu or the appropriate icon on the toolbar.  
As the cursor moves over the toolbar icons, Windows displays the corresponding category name.  
3. To display more detailed information in a selected category, click More in the Information  
Level box in the lower left corner of the window or click Level at the top of the screen, and  
then select More.  
4. Review, print, and/or save this information as desired.  
To print the information, click File > Print. Select one of the following options:  
Detailed Report (All Categories), Summary Report (All Categories), or Current  
Category. Click OK to print the report you selected.  
To save the information, click File > Save As. Select one of the following options:  
Detailed Report (All Categories), Summary Report (All Categories), or Current  
Category. Click OK to save the report you selected.  
5. To exit Diagnostics for Windows, on the File menu, click Exit.  
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Setup Utilities and Diagnostics Features  
Menu Bar—File, Categories, Navigation, Level, Tab, Help  
At the top of the Diagnostics for Windows screen is a menu bar consisting of six pull-down  
menus. Select a menu for the following system information:  
File—Save As, Print, Printer Setup, Exit.  
Categories.  
System—System board, ROM, date, and time.  
Asset Control—Asset tag, system serial number, and processor.  
Input Devices—Keyboard, mouse, and joystick(s).  
Communication—Ports.  
Storage—Storage drives.  
Graphics—Graphics.  
Memory—System board and Windows memory.  
Multimedia—Optical storage (CD, DVD, and so on) and audio.  
Windows—Windows.  
Architecture—PCI Device.  
Resources—IRQ, I/O, and Memory Map.  
Health—Status of system temperature and hard drives.  
Miscellaneous—CMOS, DMI, BIOS, System, Product Name, and Serial Number.  
Navigation—Previous Category (F5), Next Category (F6).  
Level—Less (F7), More (F8) <information on the screen>.  
Tab.  
Overview—Displays general information about the computer. This window is displayed  
when first starting the utility. The left side of the window shows hardware information,  
while the right side shows software information.  
Test—Allows you to choose various parts of the system to test. You can also choose the  
type of test and testing mode.  
Status—Displays the status of each test in progress. You can cancel testing by clicking  
the Cancel Testing button.  
Log—Displays a log of tests for each device.  
Error—Displays any errors that occurred during device testing. The window lists the  
device being tested, the type and number of errors, and the error code.  
Help—Contents, How to use Help, About.  
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Setup Utilities and Diagnostics Features  
2.4.4 Running Diagnostic Tests in Diagnostics for Windows  
To run diagnostic tests:  
1. Click Start > HP Information Center > Diagnostics for Windows.  
Alternately, you can access Diagnostics for Windows using the Control Panel.  
The screen displays the overview of the computer hardware and software. Five tabs are  
displayed below the row of icons: Overview, Test, Status, Log, and Error.  
2. Click the Test tab, or click Tab at the top of the screen and select Test.  
3. Select one of the following options:  
Quick Test—Runs a quick, general test on each device. Requires no user intervention if  
Unattended Mode is selected.  
Complete Test—Runs maximum testing of each device. The user can select Interactive  
Mode or Unattended Mode.  
Custom Test—Runs only the tests you select. To select specific devices or tests, find the  
device in the list, then select the check box beside each test. When selected, a red check  
mark is displayed in the box. Some tests selected may require user intervention.  
To test all subsystems, you must log in as the administrator. If you do not log in as the  
administrator, you will be unable to test some subsystems. The inability to test a subsystem is  
indicated by an error message under the subsystem name in the Test window or by shaded boxes  
that you cannot check.  
4. Select Interactive Mode or Unattended Mode. In Interactive Mode, the diagnostic software  
prompts you for any required input during tests. Some tests require interaction and display  
errors or halt testing if selected in conjunction with Unattended Mode.  
Interactive Mode provides maximum control over the testing process. You determine  
whether the test passed or failed. The software may prompt you to insert or remove  
devices.  
Unattended Mode does not display prompts. The software displays all discovered errors  
when testing is complete.  
5. Click the Begin Testing button at the bottom of the window. Test Status is displayed,  
showing the progress and result of each test. For more details on the tests run, click the Log  
tab or click Tab at the top of the screen and select Log.  
6. To view a test report, select one of three tabs:  
Status—Summarizes the tests run, passed, and failed during the current testing session.  
Log—Lists tests run on the system, the numbers of times each test has run, the number  
of errors found on each test, and the total run time of each test.  
Error—Lists all errors found on the computer with their error codes.  
7. To save a test report:  
Select the Log tab, then click Save to save a Log tab report.  
Select the Error tab, then click Save to save an Error tab report.  
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Setup Utilities and Diagnostics Features  
8. To print a test report:  
If the report is on the Log tab, on the File menu, click Save As, and then print the file  
from the selected folder.  
If the report is on the Error tab, select the Error tab, and then click Print.  
9. If errors are found, click the Error tab to display more detailed information and  
recommended actions.  
10. Click Print or save the error information for future reference.  
11. To exit Diagnostics for Windows, on the File menu, click Exit.  
2.5 Configuration Record  
The Configuration Record utility is a windows-based information-gathering tool that gathers  
critical hardware and software information from various computer subsystems. The information  
includes such things as the ROM, asset tag, processor, physical drives, PCI devices, memory,  
graphics, operating system version number, operating system parameters, and the operating  
system startup files to give a complete view of the computer. Configuration Record provides a  
means for automatically identifying and comparing configuration changes, and has the ability to  
maintain a configuration history. You can save the information as a history of multiple sessions.  
This utility allows the resolution of problems without taking the computer offline and assists in  
maximizing the computer availability. The information obtained by the utility is useful in  
troubleshooting system problems and streamlines the service process by enabling quick and easy  
identification of system configurations.  
The utility displays it findings in a Now.log file. If the original Base.log file is present in the  
cpqdiags directory, the Base.log file is displayed next to the Now.log file in a split window with  
the differences between the two highlighted in the color red.  
2.5.1 Installing Configuration Record  
The Configuration Record is part of Diagnostics for Windows and is automatically installed at  
the same time as Diagnostics for Windows.  
2.5.2 Running Configuration Record  
To run this program:  
1. Click Start > HP Information Center > Configuration Record.  
Alternately, you can access Diagnostics for Windows using the Control Panel.  
The Configuration Record utility has two view options: Show Changed Items Only and Show  
All. The default view is Show Changed Items Only, therefore all the text is displayed in the  
color red since it shows only the differences. Switching to Show All displays the complete,  
comprehensive view of the system.  
2. The default view is Show Changed Items Only. To view all the information gathered by  
Configuration Record, click View at the top of the window and select Show All, or click the  
Show All Items icon.  
3. To save the information in the left or right window, select File > Save Window File and  
then select Left Window File or Right Window File.  
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Setup Utilities and Diagnostics Features  
Saving the configuration of the computer periodically allows you to keep a history of the  
configuration. This history may be useful to you in the future if the system encounters a problem  
that requires debugging.  
4. To exit Configuration Record, on the File menu, click Exit.  
2.6 Remote Diagnostics Enabling Agent  
This utility provides a Web browser interface to Diagnostics for Windows. It enables remote  
control of the diagnostics and facilitates easy transfer of computer information from remote  
machines to a service provider.  
The Remote Diagnostics Enabling Agent captures hardware configuration and provides the  
ability to perform tests remotely to diagnose computer problems. In addition, the Remote  
Diagnostics Enabling Agent identifies any computer hardware device problems signaled by the  
HP Management Agents. The Remote Diagnostics Enabling Agent automatically selects these  
hardware devices for testing.  
The Remote Diagnostics Enabling Agent only works if Diagnostics for Windows is installed.  
The Remote Diagnostics Enabling Agent is pre-loaded on some computers and is available  
through a SoftPaq at http://www.hp.com under Support and Drivers.  
2.6.1 Installing/Upgrading Remote Diagnostics Enabling Agent  
1. Visit http://www.hp.com/support/files and select the applicable product.  
2. Locate the appropriate software and download the latest version.  
3. Execute the downloaded file. If you are upgrading an existing version, select Repair for the  
new version to overwrite the old version.  
2.6.2 Running the Remote Diagnostics Enabling Agent  
1. Select the Remote Diagnostics icon located in the Control Panel.  
The Remote Diagnostics Enabling Agent allows you to run Diagnostic Test or the Configuration  
Record in a browser window. You can run both of these utilities remotely or locally.  
2. To exit Remote Diagnostics, on the File menu, click Close.  
2.7 Protecting the Software  
To protect software from loss or damage, you should keep a backup copy of all system software,  
applications, and related files stored on the hard drive. See the operating system or backup utility  
documentation for instructions about making backup copies of data files.  
2.8 Restoring the Software  
You can restore the Windows operating system and software to its original state using the  
Restore CD. See the Restore CD for complete instructions.  
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Desktop Management  
HP Intelligent Manageability provides standards-based solutions for managing and controlling  
desktops, workstations, and notebook PCs in a networked environment.  
The key capabilities and features of desktop management are:  
Initial configuration and deployment  
Remote system installation  
Software updating and management  
ROM flash  
Asset tracking and security  
Fault notification and recovery  
Support for specific features described in this guide may vary by model or software version.  
3.1 Initial Configuration and Deployment  
HP computers come with a preinstalled system software image. After a brief software  
“unbundling” process, the computer is ready for use.  
You can deploy a customized software image by:  
Installing additional software applications after unbundling the preinstalled software image.  
Using software deployment tools, such as Altiris Deployment SolutionsTM, to replace the  
preinstalled software with a customized software image.  
Using a disk cloning process to copy the contents from one hard drive to another.  
The best deployment method depends upon your information technology environment and  
processes. The PC Deployment section of the Solutions and Services Web site  
(http://h18000.www1.hp.com/solutions/pcsolutions) provides information to help you select the  
best deployment method.  
The Restore Plus! CD, ROM-based setup, and ACPI hardware provide further assistance with  
recovery of system software, configuration management and troubleshooting, and power  
management.  
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3.2 Remote System Installation  
Remote System Installation allows you to start and set up your system using the software and  
configuration information located on a network server by initiating the Preboot Execution  
Environment (PXE). The Remote System Installation feature is usually used as a system setup  
and configuration tool, and can be used for the following tasks:  
Formatting a hard drive.  
Deploying a software image on one or more new PCs.  
Remotely updating the system BIOS in flash ROM. See Section 3.4.1, “Remote ROM  
Configuring the system BIOS settings.  
To initiate Remote System Installation, press F12 when the F12 = Network Service Boot  
message appears in the lower-right corner of the HP logo screen. Follow the instructions on the  
screen to continue the process. The default boot order is a BIOS configuration setting that you  
can change to always attempt to PXE boot.  
3.3 Software Updating and Management  
HP provides several tools for managing and updating software on desktops and workstations—  
HP Client Manager Software, Altiris Client Management Solution; System Software Manager;  
HP Proactive Notification; and ActiveUpdate.  
3.3.1 HP Client Manager Software  
HP Client Manager Software (HP CMS) tightly integrates HP Intelligent Manageability  
technology within Altiris to provide superior hardware management capabilities for HP access  
devices that include:  
Detailed views of hardware inventory for asset management  
PC health check monitoring and diagnostics  
Proactive notification of changes in your hardware environment  
Web-accessible reporting of business critical details such as machines with thermal  
warnings, memory alerts, and more  
Remote updating of system software such as device drivers and ROM BIOS  
Remote changing of boot order  
System BIOS setting configuration  
For more information on the HP Client Manager, visit  
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3.3.2 Altiris Client Management Solutions  
HP and Altiris have partnered to provide comprehensive, tightly integrated systems management  
solutions to reduce the cost of owning HP client PCs. HP Client Manager Software is the  
foundation for additional Altiris Client Management Solutions that address:  
Inventory and Asset Management  
SW license compliance  
PC tracking and reporting  
Lease contract, fixing asset tracking  
Deployment and Migration  
Windows 2000/XP migration  
System deployment  
Personality migrations  
Help Desk and Problem Resolution  
Managing help desk tickets  
Remote troubleshooting  
Remote problem resolution  
Client disaster recovery  
Software and Operations Management  
Ongoing desktop management  
HP system SW deployment  
Application self-healing  
For more information and details on how to download a fully-functional 30-day evaluation  
version of the Altiris solutions, visit http://h18000.www1.hp.com/im/prodinfo.html#deploy.  
On selected desktop and notebook models, an Altiris management agent is included as part of the  
factory-loaded image. This agent enables communication with the Altiris Development Solution,  
which you can use to complete new hardware deployment or personality migration to a new  
operating system using easy-to-follow wizards. Altiris solutions provide easy-to-use software  
distribution capabilities. When used in conjunction with System Software Manager, or HP Client  
Manager Software, administrators can also update ROM BIOS and device driver software from a  
central console.  
For more information, visit http://www.hp.com/go/easydeploy.  
3.3.3 System Software Manager  
System Software Manager (SSM) lets you update system-level software on multiple systems  
simultaneously. When executed on a PC client system, SSM detects both hardware and software  
versions, then updates the appropriate software from a central repository, also known as a file  
store. Driver versions supported by SSM are denoted with a special icon on the driver download  
Web site and on the Support Software CD. To download the utility or to obtain more information  
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3.3.4 Proactive Change Notification (PCN)  
The Proactive Change Notification program uses the Subscriber's Choice Web site to proactively  
and automatically send you:  
Proactive Change Notification (PCN) emails informing you of hardware and software  
changes to most commercial computers and servers, up to 60 days in advance.  
E-mail containing Customer Bulletins, Customer Advisories, Customer Notes, Security  
Bulletins, and Driver alerts for most commercial computers and servers.  
You create your own profile to ensure that you only receive the information relevant to your IT  
environment. To learn more about the Proactive Change Notification program and create your  
custom profile, visit http://www.hp.com/go/pcn.  
3.3.5 Subscriber’s Choice  
Subscriber’s Choice is a client-based service from HP. Based on your profile, HP will supply you  
with personalized product tips, feature articles, and/or driver and support alerts/notifications.  
Subscriber’s Choice Driver and Support Alerts/Notifications will deliver e-mails notifying you  
that the information you subscribed to in your profile is available for review and retrieval. To  
learn more about Subscriber’s Choice and create a custom profile, visit  
3.4 ROM Flash  
The computer comes with a reprogrammable flash ROM (read only memory). By establishing a  
setup password in Computer Setup (F10) Utility, you can protect the ROM from unintentional  
updates or overwrites. This protection is important to ensure the operating integrity of the  
computer. Should you need or want to upgrade your ROM, you may:  
Order an upgraded ROMPaq™ diskette from HP.  
Download the latest ROMPaq images from http://www.hp.com/support/files.  
CAUTION: For maximum ROM protection, establish a setup password. The setup password prevents  
unauthorized ROM upgrades. System Software Manager allows the system administrator to set the setup  
password on one or more PCs simultaneously. For more information, visit  
Ä
3.4.1 Remote ROM Flash  
Remote ROM Flash allows the system administrator to safely upgrade the ROM on remote HP  
computers directly from the centralized network management console. Enabling the system  
administrator to perform this task remotely on multiple computers and personal computers  
results in a consistent deployment of and greater control over HP PC ROM images over the  
network.  
The computer must be powered on, or turned on through Remote Wakeup, to take advantage of  
Remote ROM Flash.  
For more information on Remote ROM Flash, refer to the HP Client Manager Software or  
System Software Manager at http://h18000.www1.hp.com/im/prodinfo.html.  
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3.4.2 HPQ Flash  
Use the HPQFlash utility to locally update or restore the system ROM in individual PCs through  
a Windows environment. For more information on HPQFlash, refer to the HP Client Manager  
Software or System Software Manager at http://www.hp.com/support/files.  
3.4.3 FailSafe Boot Block ROM  
The FailSafe Boot Block ROM allows for system recovery in the unlikely event of a ROM flash  
failure, for example, if a power failure occurs during a ROM upgrade. The Boot Block is a  
flash-protected section of the ROM that checks for a valid system ROM flash when power to the  
system is turned on.  
If the system ROM is valid, the system starts normally.  
If the system ROM fails the validation check, the FailSafe Boot Block ROM provides  
enough support to start the system from a ROMPaq diskette, which programs the system  
ROM with a valid image.  
Some models also support recovery from a ROMPaq CD.  
When the bootblock detects an invalid system ROM, the System Power LED blinks RED eight  
times, one every second, followed by a two-second pause. You will also hear eight simultaneous  
beeps. A Boot Block recovery mode message is displayed on the screen (some models).  
The beeps continue through five cycles of eight simultaneous beeps and stop; however, the LED  
continues blinking until the issue is resolved.  
To recover the system after it enters Boot Block recovery mode, complete the following steps:  
1. If there is a diskette or a CD in the computer, remove the media and turn off the power.  
2. Insert a ROMPaq diskette, bootable drive key, or CD.  
3. Turn on power to the system.  
4. If no ROMPaq diskette is found, you must insert one and restart the computer.  
3.4.4 Replicating Your Setup  
To replicate or copy one setup configuration to other computers of the same model, HP has  
provided a Windows-based software utility, System Software Manager, that you can download  
from http://www.hp.com/go/ssm, plus a DOS-based software, CMOS Save/Load utility, that  
can be downloaded from http://www.hp.com/support/files. After logging on to the HP Support  
Web site, enter the name of your computer when prompted.  
Creating a Bootable Device  
Supported USB Flash Media Device  
Supported devices, such as an HP Drive Key, have a pre-installed image to simplify the process  
of making them bootable. If the USB flash media device being used does not have this image, use  
the procedure later in this section (see “Unsupported USB Flash Media Device” on page 7).  
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CAUTION: You cannot boot all computers from a USB flash media device. If the default boot order in  
the Computer Setup (F10) Utility lists the USB device before the hard drive, you can boot the computer  
from a USB flash media device. Otherwise, you must use a bootable diskette.  
Ä
To create a bootable USB flash media device, you must have a:  
Supported USB flash media device.  
Bootable DOS diskette with the FDISK and SYS programs. If SYS is not available, you can  
use FORMAT, but you will lose all existing files on the USB flash media device.  
PC that is bootable from a USB flash media device.  
1. Turn off the computer.  
2. Insert the USB flash media device into one of the computer's USB ports and remove all other  
USB storage devices except USB diskette drives.  
3. Insert a bootable DOS diskette with FDISK.COM and either SYS.COM or FORMAT.COM  
into a diskette drive and turn on the computer to boot to the DOS diskette.  
4. Run FDISK from the A:\ prompt by typing FDISK and pressing Enter. If prompted, click  
Yes (Y) to enable large disk support.  
5. Enter Choice [5] to display the drives in the system. The USB flash media device is the drive  
that closely matches the size of one of the drives listed. It is usually the last drive in the list.  
Note the letter of the drive.  
USB flash media device drive: __________  
CAUTION: If a drive does not match the USB flash media device, do not proceed. Data loss may occur.  
Check all USB ports for additional storage devices. If any are found, remove them, reboot the computer,  
and proceed from step 4. If none are found, either the system does not support the USB flash media  
device or the USB flash media device is defective. DO NOT proceed in attempting to make the USB flash  
media device bootable.  
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6. Exit FDISK by pressing the Esc key to return to the A:\ prompt.  
7. If your bootable DOS diskette contains SYS.COM, go to step 8. Otherwise, go to step 9.  
8. At the A:\ prompt, enter SYS x: where x represents the drive letter noted above.  
ÄCAUTION: Make sure that you have entered the correct drive letter for the USB flash media device.  
After transferring the system files, SYS will return to the A:\ prompt. Go to step 13.  
9. Copy any files you want to keep from your USB flash media device to a temporary directory  
on another drive (for example, the system's internal hard drive).  
10. At the A:\ prompt, enter FORMAT /S X: where X represents the drive letter noted before.  
ÄCAUTION: Make sure that you have entered the correct drive letter for the USB flash media device.  
FORMAT will display one or more warnings and ask you each time whether you want to  
proceed. Enter Y each time. FORMAT will format the USB flash media device, add the  
system files, and ask for a Volume Label.  
11. Press Enter for no label or enter one if desired.  
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12. Copy any files you saved in step 9 back to your USB flash media device.  
13. Remove the diskette and reboot the computer. The computer will boot to the USB flash  
media device as drive C.  
The default boot order varies from computer to computer, and you can change it in the Computer  
Setup (F10) Utility.  
If you have used a DOS version from Windows 9x, you may see a brief Windows logo screen. If  
you do not want this screen, add a zero-length file named LOGO.SYS to the root directory of the  
USB flash media device.  
Unsupported USB Flash Media Device  
CAUTION: You cannot boot all computers from a USB flash media device. If the default boot order in  
the Computer Setup (F10) Utility lists the USB device before the hard drive, you can boot the computer  
from a USB flash media device. Otherwise, you must use a bootable diskette.  
Ä
To create a bootable USB flash media device, you must have a:  
Supported USB flash media device.  
Bootable DOS diskette with the FDISK and SYS programs. If SYS is not available, you can  
use FORMAT, but you will lose all existing files on the USB flash media device.  
PC that is bootable from a USB flash media device.  
1. If there are any PCI cards in the system that have SCSI, ATA RAID or SATA drives attached,  
turn off the computer and unplug the power cord.  
ÄCAUTION: You must unplug the power cord.  
2. Open the computer and remove the PCI cards.  
3. Insert the USB flash media device into one of the computer's USB ports and remove all other  
USB storage devices except USB diskette drives. Close the computer cover.  
4. Plug in the power cord and turn on the computer.  
5. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
6. Go to Integrated Peripherals > South OnChip IDE Device to disable the PATA controller,  
and go to Integrated Peripherals > South OnChip PCI Device to disable the SATA  
controller. Exit setup, confirming the changes.  
7. Insert a bootable DOS diskette with FDISK.COM and either SYS.COM or FORMAT.COM  
into a diskette drive and turn on the computer to boot to the DOS diskette.  
8. Run FDISK and delete any existing partitions on the USB flash media device. Create a new  
partition and mark it active. Exit FDISK by pressing the Esc key.  
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9. If the system did not automatically restart when exiting FDISK, press Ctrl+Alt+Del to  
reboot to the DOS diskette.  
10. At the A:\ prompt, type FORMAT C: /S and press Enter. Format will format the USB flash  
media device, add the system files, and ask for a Volume Label.  
11. Press Enter for no label or enter one if desired.  
12. Turn off the computer and unplug the power cord. Open the computer and re-install any PCI  
cards that were previously removed. Close the computer cover.  
13. Plug in the power cord, remove the diskette, and turn on the computer.  
14. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
15. Go to Integrated Peripherals > South OnChip IDE Device and Integrated Peripherals >  
South OnChip PCI Device and re-enable the PATA and SATA controllers that were disabled  
in step 6.  
16. Save the changes and exit. The computer will boot to the USB flash media device as drive C.  
The default boot order varies from computer to computer, and you can change it in the Computer  
Setup (F10) Utility. Refer to the Computer Setup Guide on the Documentation CD for  
instructions.  
If you have used a DOS version from Windows 9x, you may see a brief Windows logo screen. If  
you do not want this screen, add a zero-length file named LOGO.SYS to the root directory of the  
USB flash media device.  
3.4.5 Dual-State Power Button  
With Advanced Configuration and Power Interface (ACPI) enabled for Windows XP, the power  
button can function either as an on/off switch or as a suspend button. The suspend feature does  
not completely turn off power, but instead causes the computer to enter a low-power standby.  
This allows you to quickly power down without closing applications and to quickly return to the  
same operational state without any data loss.  
To change the power button’s configuration, complete the following steps:  
1. Left click on the Start Button, then select Control Panel > Performance and  
Maintenance > Power Options.  
2. In the Power Options Properties, select the Advanced tab.  
3. In the Power Button section, select Standby.  
After configuring the power button to function as a suspend button, press the power button to put  
the system in a very low power state (standby). Press the button again to quickly bring the system  
out of suspend to full power status. To completely turn off all power to the system, press and hold  
the power button for four seconds.  
CAUTION: Do not use the power button to turn off the computer unless the system is not responding;  
Ä
turning off the power without operating system interaction could cause damage to or loss of data on the  
hard drive.  
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3.4.6 World Wide Web Site  
When making the transition to new or revised operating systems, it is important to implement the  
support software designed for that operating system. If you plan to run a version of Microsoft  
Windows that is different from the version included with your computer, you must install  
corresponding device drivers and utilities to ensure that all features are supported and  
functioning properly.  
HP has made the task of locating, accessing, evaluating, and installing the latest support software  
easier. You can download the software from http://www.hp.com/support. The Web site contains  
the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft  
Windows operating system on your HP computer.  
3.4.7 Building Blocks and Partners  
HP management solutions integrate with other systems management applications, and are based  
on industry standards, such as:  
Web-Based Enterprise Management (WBEM)  
Windows Management Interface (WMI)  
Wake on LAN Technology  
ACPI  
SMBIOS  
Pre-boot Execution (PXE) support  
3.5 Asset Tracking and Security  
Asset tracking features incorporated into the computer provide key asset tracking data that you  
can manage using HP Insight Manager, HP Client Manager or other system management  
applications. Seamless, automatic integration between asset tracking features and these products  
enables you to choose the management tool that is best suited to your environment and to  
leverage your investment in existing tools.  
HP also offers several solutions for controlling access to valuable components and information.  
ProtectTools Imbeds Security, if installed, prevents unauthorized access to the internal  
components of the personal computer. By disabling parallel, serial, or USB ports, or by disabling  
removable media boot capability, you can protect valuable data assets. You can automatically  
forward Memory Change and Smart Cover Sensor alerts to system management applications to  
deliver proactive notification of tampering with a computer’s internal components.  
ProtectTools is available on some systems.  
Use the following utilities to manage security settings on your HP computer:  
Locally, using the Computer Setup Utilities. See the Computer Setup (F10) Utility Guide on  
the Documentation CD included with the computer for additional information and  
instructions on using the Computer Setup Utilities.  
Remotely, using HP Client Manager or System Software Manager. This software enables the  
secure, consistent deployment and control of security settings from a simple command-line  
utility.  
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The following table and sections refer to managing security features of your computer locally  
through the Computer Setup Utilities (F10).  
Security Features Overview  
Option  
Description  
Supervisor  
Password  
Allows you to set and enable Supervisor (administrator) password.  
If the Supervisor password is set, it is required to change Computer Setup  
options, flash the ROM, and make changes to certain plug and play settings  
under Windows.  
See the Troubleshooting Guide on the Documentation CD for more information.  
User  
Password  
Allows you to set and enable a User password.  
If the User password is set, it is required to access the computer when power is  
turned on.  
See the Troubleshooting Guide on the Documentation CD for more information.  
Device  
Security  
Enables/disables serial ports, parallel port, front USB ports, system audio, and  
network controllers (some models).  
Network  
Service Boot  
Enables/disables the computer’s ability to boot from an operating system  
installed on a network server. (Feature available on NIC models only; the  
network controller must reside on the PCI bus or be embedded on the system  
board.)  
System IDs  
Allows you to set:  
• Asset tag (18-byte identifier) and ownership Tag (80-byte identifier  
displayed during POST).  
• Chassis serial number or Universal Unique Identifier (UUID) number. The  
UUID can only be updated if the current chassis serial number is invalid.  
(These ID numbers are normally set in the factory and are used to uniquely  
identify the system.)  
Keyboard locale setting (for example, English or German) for System ID entry.  
Master Boot  
Record  
Security  
Allows you to enable or disable Master Boot Record (MBR) Security.  
When enabled, the BIOS rejects all requests to write to the MBR on the current  
bootable disk. Each time the computer is powered on or rebooted, the BIOS  
compares the MBR of the current bootable disk to the previously-saved MBR. If  
changes are detected, you are given the option of saving the MBR on the  
current bootable disk, restoring the previously-saved MBR, or disabling MBR  
Security. You must know the setup password, if one is set.  
Disable MBR Security before intentionally changing the formatting or  
partitioning of the current bootable disk. Several disk utilities (such as FDISK  
and FORMAT) attempt to update the MBR.  
If MBR Security is enabled and disk accesses are being serviced by the BIOS,  
write requests to the MBR are rejected, causing the utilities to report errors.  
If MBR Security is enabled and disk accesses are being serviced by the operating  
system, any MBR change will be detected by the BIOS during the next reboot, and an  
MBR Security warning message will be displayed.  
For more information about Computer Setup, see the Computer Setup (F10) Utility Guide on the  
Documentation CD.  
Support for security features may vary depending on the specific computer configuration.  
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3.5.1 Password Security  
The user password prevents unauthorized use of the computer by requiring entry of a password to  
access applications or data each time the computer is turned on or restarted. The setup password  
specifically prevents unauthorized access to Computer Setup, and can also be used as an override  
to the user password. That is, when prompted for the user password, entering the supervisor  
password instead will allow access to the computer.  
A network-wide setup password can be established to enable the system administrator to log in to  
all network systems to perform maintenance without having to know the user password, even if  
one has been established.  
System Software Manager and HP Client Manager Software allow remote management of Setup  
Passwords and other BIOS settings in a networked environment. For more information, visit  
3.5.2 Establishing a Supervisor Password with Computer Setup  
If the system is equipped with an embedded security device, refer to HP ProtectTools Embedded  
Security Guide, on the Documentation CD. Establishing a Supervisor password through  
Computer Setup prevents reconfiguration of the computer (use of the Computer Setup F10  
utility) until the password is entered.  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
3. Select Set Security Password and follow the instructions on the screen.  
4. Before exiting, on the File menu, select Save Changes and Exit.  
3.5.3 Establishing a User Password with Computer Setup  
Establishing a user password through Computer Setup prevents access to the computer when  
power is turned on unless the password is entered. When a user password is set, Computer Setup  
presents Password Options under the Security menu. Password options include Password Prompt  
on Warm Boot. When Password Prompt on Warm Boot is enabled, you must also enter the  
password each time the computer is rebooted.  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
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3. Select Security, then Power-On Password and follow the instructions on the screen.  
4. Before exiting, on the File menu, select Save Changes and Exit.  
Entering a User Password  
To enter a power-on password, complete the following steps:  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. When the key icon appears on the monitor, type your current password, then press Enter.  
Type carefully; for security reasons, the characters you type do not appear on the screen.  
If you enter the password incorrectly, the message “Invalid Password, Press any key to continue!”  
appears. Try again. After three unsuccessful tries, you must turn off the computer, then turn it on  
again before you can continue.  
Entering a Supervisor Password  
If the system is equipped with an embedded security device, refer to the HP ProtectTools  
Embedded Security Guide, on the Documentation CD.  
If a Supervisor password has been established on the computer, you will be prompted to enter it  
each time you run Computer Setup.  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
3. When the Enter Password box appears on the monitor, type the supervisor password, then  
press Enter.  
Type carefully; for security reasons, the characters you type do not appear on the screen.  
If you enter the password incorrectly, the message “Invalid Password, Press any key to continue!”  
appears. Try again. After three unsuccessful tries, you must turn off the computer, then turn it on  
again before you can continue.  
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Changing a User or Supervisor Password  
If the system is equipped with an embedded security device, refer to the HP ProtectTools  
Embedded Security Guide, on the Documentation CD.  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart  
the Computer.  
2. When the Enter Password box appears, type the current User password, if a password is  
required.  
3. Press Enter.  
4. Press and hold the F10 key until you enter Computer Setup. Press Enter to bypass the title  
screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
5. When the Enter Password box appears to access Computer Setup, type the current  
Supervisor password, if required.  
6. Press Enter.  
7. Select either Set Supervisor Password or Set User Password.  
8. When the Enter Password box appears on the screen, type the new password and press  
Enter.  
9. Before exiting, on the File menu, select Save Changes and Exit.  
To delete a password instead of changing it, when the Enter Password box appears on the  
screen, press Enter instead of entering the new password. This deletes the current password.  
Clearing Passwords  
If you forget the password, you cannot access the computer. Refer to the Troubleshooting Guide  
on the Documentation CD for instructions on clearing passwords.  
If the system is equipped with an embedded security device, refer to the HP ProtectTools  
Embedded Security Guide, on the Documentation CD.  
3.5.4 Master Boot Record Security  
The Master Boot Record (MBR) contains information needed to successfully boot from a disk  
and to access the data stored on the disk. Master Boot Record Security may prevent unintentional  
or malicious changes to the MBR, such as those caused by some computer viruses or by the  
incorrect use of certain disk utilities. It also allows you to recover the “last known good” MBR,  
should the computer detect changes to the MBR when the system is restarted.  
To enable MBR Security, complete the following steps:  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
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If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
3. Select Advanced BIOS Features > MBR Security and press Enter.  
4. In the MBR Security box, press the up or down arrows to select Enabled or Disabled.  
5. To accept the changes, press Enter. To abort the changes, press the Esc key.  
When MBR Security is enabled, the BIOS prevents any changes being made to the MBR of the  
current bootable disk while in MS-DOS or Windows Safe Mode.  
Most operating systems control access to the MBR of the current bootable disk; the BIOS cannot  
prevent changes that may occur while the operating system is running.  
Each time the computer is turned on or restarted, the BIOS compares the MBR of the current  
bootable disk to the previously saved MBR. If changes are detected and if the current bootable  
disk is the same disk from which the MBR was previously saved, the following message is  
displayed:  
1999—Master Boot Record has changed.  
1. Press any key to enter Setup to configure MBR Security.  
2. Upon entering Computer Setup, you must disable the MBR Security feature.  
You must know the supervisor password, if one exists.  
If changes are detected and if the current bootable disk is not the same disk from which the MBR  
was previously saved, the following message is displayed:  
2000—Master Boot Record Hard Drive has changed.  
1. Press any key to enter Setup to configure MBR Security.  
2. Upon entering Computer Setup, you must disable the MBR Security feature.  
You must know the supervisor password, if one exists.  
In the unlikely event that the previously saved MBR has been corrupted, the following message is  
displayed:  
1998—Master Boot Record has been lost.  
1. Press any key to enter Setup to configure MBR Security.  
2. Upon entering Computer Setup, you must disable the MBR Security feature.  
You must know the supervisor password, if one exists.  
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3.5.5 Before You Partition or Format the Current Bootable Disk  
Ensure that MBR Security is disabled before you change partitioning or formatting of the current  
bootable disk. Some disk utilities, such as FDISK and FORMAT, attempt to update the MBR. If  
MBR Security is enabled when you change partitioning or formatting of the disk, you may  
receive error messages from the disk utility or a warning from MBR Security the next time the  
computer is turned on or restarted.  
To disable MBR Security, complete the following steps:  
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.  
2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer  
Setup. Press Enter to bypass the title screen, if necessary.  
If you do not press the F10 key at the appropriate time, you must restart the computer and press  
and hold the F10 key again to access the utility.  
If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.  
3. Select Advanced BIOS Features > MBR Security and press Enter.  
4. In the MBR Security Pop-up box, use the down arrow key to select Disabled.  
5. Press Enter.  
6. Before exiting, on the File menu, click Save and Exit Setup.  
3.5.6 Cable Lock Provision  
The rear panel of the computer accommodates a cable lock so that you can physically secure the  
computer to a work area.  
For illustrated instructions, see the Removal and Replacement Chapter for the specific chassis.  
3.6 Fault Notification and Recovery  
Fault Notification and Recovery features combine innovative hardware and software technology  
to prevent the loss of critical data and minimize unplanned downtime.  
When a fault occurs, the computer displays a Local Alert message containing a description of the  
fault and any recommended actions. You can then view current system health by using the HP  
Client Manager Software. If the computer is connected to a network managed by HP Insight  
Manager, HP Client Manager Software, or other system management applications, the computer  
also sends a fault notice to the network management application.  
3.6.1 Surge-Tolerant Power Supply  
An integrated surge-tolerant power supply provides greater reliability when the computer is hit  
with an unpredictable power surge. This power supply is rated to withstand a power surge of up  
to 2000 volts without incurring any system downtime or data loss.  
3.6.2 Thermal Sensor  
The thermal sensor is a hardware and software feature that tracks the internal temperature of the  
computer. This feature displays a warning message when the normal range is exceeded, which  
gives you time to take action before internal components are damaged or data is lost.  
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4
Serial and Parallel ATA Drive  
Guidelines and Features  
Serial ATA = SATA  
Parallel ATA = PATA  
CAUTION: HP only supports a PATA hard drive in SATA systems when the PATA hard drive is used in  
a MultiBay device.  
Ä
4.1 SATA Hard Drive Information  
Characteristic  
Number of pins/conductors in data cable  
Number of pins in power cable  
Maximum data cable length  
Data interface voltage differential  
Drive voltages  
SATA  
7/7  
15  
39.37 in (100 cm)  
400 - 700 mV  
3.3 V, 5V, 12 V  
N/A  
Jumpers for configuring drive  
Data transfer rate  
1.5 Gb/s  
SATA connectors on the system board are color coded to make identification easier.  
SATA Identification  
Primary channel, device 0  
Color  
Blue  
Secondary channel, device 0  
White  
4.1.1 SATA Data Cable  
The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive. As  
shown in the table, each cable has three grounds, and four transmit/receive pins.  
SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and  
never bend it tighter than a 30 mm (1.18 in) radius.  
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Serial and Parallel ATA Drive Guidelines and Features  
Pin Number  
Usage  
Ground  
A+  
Device Plug  
Ground  
Host Plug  
Ground  
P1  
P2*  
P3*  
P4  
Transmit data  
Transmit data  
Ground  
Receive data  
Receive data  
Ground  
A-  
Ground  
B-  
P5**  
P6**  
P7  
Receive data  
Receive data  
Ground  
Transmit data  
Transmit data  
Ground  
B+  
Ground  
*P2 and P3 differential signal pair  
**P5 and P6 differential signal pair  
4.1.2 SATA Power Cable  
Pin  
P1  
P2  
P3  
P4  
P5  
P6  
P7  
P8  
Usage  
V3.3  
Notes  
Pin  
P9  
Usage  
V5  
Notes  
3.3 V power  
3.3 V power  
3.3 V power  
5 V power  
V3.3  
P10  
P11  
P12  
P13  
P14  
P15  
Ground  
Reserved  
Ground  
V 12  
V3.3  
Ground  
Ground  
Ground  
V5  
12 V power  
12 V power  
12 V power  
V12  
5 V power  
5 V power  
V12  
V5  
4.2 PATA Hard Drive Information  
Characteristic  
Number of pins/conductors in data cable  
Number of pins in power cable  
Maximum data cable length  
Data interface voltage  
PATA  
40/80  
4
18 in (45.7 cm)  
5 V  
Drive voltages  
5 V, 12 V  
Required  
up to 1.0 Gb/s  
Jumpers for configuring drive  
Data transfer rate  
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4.2.1 PATA Data Cable  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
4
5
Reset  
Ground  
DD7  
15  
16  
17  
18  
19  
DD1  
DD14  
DD0  
DD15  
Ground  
29  
30  
31  
32  
33  
DMAK  
Ground  
INTRQ  
IOCS16  
DA1  
DD8  
DD6  
6
DD9  
20  
21  
22  
23  
24  
(Key)  
34  
35  
36  
37  
38  
PDIAG (cable detect)  
7
DD5  
DMARQ  
Ground  
DIOW  
Ground  
DA0  
8
9
10  
DD10  
DD4  
DD11  
DA2  
CS1FX  
CS3FX  
11  
12  
13  
14  
DD3  
25  
26  
27  
28  
DIOR  
39  
40  
DASP  
Ground  
DD12  
DD2  
Ground  
IORDY  
CSEL  
DD13  
4.2.2 PATA Power Cable  
Pin  
1
Usage  
+12 V  
Ground  
Ground  
+5 V  
2
3
4
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4.2.3 PATA Cable Layout  
The faces of industry-standard cable connectors are color-coded for easy recognition:  
System board connector = blue face  
Device 0 connector = black face  
Device 1 connector = gray face  
The color code of an industry-standard cable is applicable only if the drive’s jumper is in the  
cable-select position.  
Single-Drive Cable  
System  
Board  
Device 0  
Blue  
Face  
Black  
Face  
Two-Drive Cable  
Device 0  
Device 1  
System  
Board  
Blue  
Face  
Gray  
Face  
Black  
Face  
On a two-drive cable, the Drive/Device 0 connector is always the farthest one from the system  
board connector and the Drive/Device 1 connector is always the closest to the system board  
connector.  
Some cables may be labeled “Drive 0” instead of “Device 0” and “Drive 1” instead of  
“Device 1”.  
4.3 PATA Drive Installation Guidelines  
CAUTION: HP only supports a PATA hard drive in SATA systems when the PATA hard drive is used in  
a MultiBay device.  
Ä
This computer system board has one Parallel ATA (PATA) channel.  
The channel can have up to two devices attached to it. All drives are connected to a channel  
using an industry-standard 80-conductor cable.  
The industry standard 1.44 MB diskette drive has its own separate channel and is not included as  
a part of the maximum four drives.  
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The drive attached to a channel must have a drive designation. If a drive is attached to the  
Device 0 cable position and its cable-select jumper is present, the drive is designated as Device  
0. Similarly, if a drive is attached to the Device 1 cable position and its cable-select jumper is  
present, the drive is designated as Device 1.  
For optimal performance of a computer system, all drives need to be attached to the PATA  
channel(s) in a specified sequence. This sequence is determined by the device class of the drives  
and by specific attach sequence rules.  
4.3.1 PATA Device Classes  
To determine the best drive attach sequence, ATA/ATAPI drives are segregated into four  
different classes based upon the bandwidth demands they place on an ATA channel. The most  
demanding devices are in Class 1 and the least demanding are in Class 4.  
Class 1  
Hard  
Drives  
Class 2  
High Speed  
Optical Drives  
Class 3  
Optical Storage  
Drives  
Class 4  
Magnetic  
Storage Drives  
Only MultiBay  
hard drive is  
supported  
DVD  
DVD-CD R/W  
R/W CD-ROM  
CD-ROM  
Zip  
General Attach Guidelines  
The lower the device class number, the faster the device and the more bandwidth required.  
A drive installed in the Device 0 position receives the greatest possible bandwidth.  
4.4 ATA SMART Drives  
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP  
Personal Computers have built-in drive failure prediction that warns the user or network  
administrator of an impending failure or crash of the hard drive. The SMART drive tracks fault  
prediction and failure indication parameters such as reallocated sector count, spin retry count,  
and calibration retry count. If the drive determines that a failure is imminent, it generates a fault  
alert.  
4.5 Drive Capacities  
The combination of the file system and the operating system used in the computer determines the  
maximum usable size of a drive partition. A drive partition is the largest segment of a drive that  
the operating system can properly access. Therefore, a single hard drive can be subdivided into a  
number of unique drive partitions in order to make use of all of its space.  
Because of the differences in the way that drive sizes are calculated, the size reported by the  
operating system may differ from that marked on the hard drive or listed in the computer  
specification. Drive size calculations by drive manufacturers are bytes to the base 10 while  
calculations by Microsoft are bytes to the base 2.  
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Drive/Partition Capacity Limits  
Maximum Size  
File  
Controller  
Type  
System  
Operating System  
Windows 2000/ XP  
Partition  
32 GB  
2 TB  
Drive  
FAT 32  
NTFS  
ATA  
ATA  
128 PB  
128 PB  
Windows NT/2000/XP  
4.6 SATA BIOS  
Windows 2000 and XP  
Windows 9x, NT, and Linux  
Enhanced Mode (default BIOS Setting)  
—Separate IDE controller  
Compatibility Mode (non-default BIOS Setting)  
—Combined IDE controller  
• PATA Controller in Legacy Mode  
- Device 0 is accessible as Device 0 of  
PATA controller’s Primary Channel  
- Device 1 is accessible as Device 1 of  
PATA controller’s Primary Channel  
• PATA Controller in Legacy Mode  
- Device 0 is accessible as Device 0 of the  
combined controller’s Secondary Channel  
- Device 1 is accessible as Device 1 of the  
combined controller’s Secondary Channel  
• SATA Controller in Native Mode  
- SATA 0 is accessible as Device 0 of  
SATA controller’s Primary Channel  
- SATA 1 is accessible as Device 0 of  
SATA controller’s Secondary Channel  
SATA 2 is accessible as Device 1 of SATA  
controller’s Primary Channel  
• SATA Controller in Legacy Mode  
- SATA 0 is accessible as Device 0 of the  
combined controller’s Primary Channel  
- SATA 1 is inaccessible  
- SATA 2 is accessible as device 1 of the  
combined controller’s Primary Channel  
- SATA 3 is inaccessible  
- SATA 3 is accessible as Device 1 of  
SATA controller’s Secondary Channel  
4.6.1 Legacy Mode  
Use Legacy mode to access devices attached to the embedded IDE controller. The channel  
requires two fixed I/O address ranges and an IRQ for each.  
Command block: 1F0h - 1F7h  
Control block: 3F6h  
IRQ: 14  
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4.6.2 Native Mode  
Use Native mode to access devices attached to add-in cards. Native mode is not supported by  
many legacy operating systems. PCI Plug-n-Play BIOS assigns addresses and the IRQ is shared  
with multiple controllers. The PCI Configuration Space contains Base Address Registers for the  
Command and Control Block.  
Offset 10h—Primary Command base address  
Offset 14h—Primary Control base address  
Offset 18h—Secondary Command base address  
Offset 1Ch—Secondary Control base address  
4.7 Mixed Devices Boot and Drive Letter Ordering  
HDD Boot and Drive  
SATA Emulation  
Hard Drive Order  
Letter Ordering  
Separate IDE Controller  
(default). Used with Windows  
2000 and XP.  
A. Integrated SATA  
B. Integrated IDE  
A1. SATA 0  
A2. SATA 2  
A3. SATA 1  
A4. SATA 3  
B1. IDE Device 0  
B2. IDE Device 1  
Separate IDE Controller.  
Used with Windows 2000  
and XP.  
A. Integrated IDE  
B. Integrated SATA  
A1. IDE Device 0  
A2. IDE Device 1  
B1. SATA 0  
B2. SATA 2  
B3. SATA 1  
B4. SATA 3  
Combined with IDE  
A. Integrated SATA  
B. Integrated IDE  
A1. SATA 0  
A2. SATA 2  
B1. IDE Device 0  
B2. IDE Device 1  
Controller. Used with  
Windows 9x, NT, and Linux.  
Combined with IDE  
A. Integrated IDE  
B. Integrated SATA  
A1. IDE Device 0  
A2. IDE Device 1  
B1. SATA 0  
Controller. Used with  
Windows 9x, NT, and Linux.  
B2. SATA 2  
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5
Identifying the Chassis, Routine Care, and  
Disassembly Preparation  
This chapter provides general service information. To properly service the computer, you must  
adhere to the procedures and precautions described in this chapter.  
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the  
system board. You must disconnect the power cord from the power source before opening the computer  
to prevent system board or component damage.  
Ä
Not all models are available in all chassis styles.  
5.1 Chassis Designations  
5.1.1 Microtower (MT)  
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5.1.2 Small Form Factor (SFF)  
5.2 Electrostatic Discharge Information  
A sudden discharge of static electricity from your finger or other conductor can destroy  
static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage  
occurs. An electronic device exposed to electrostatic discharge (ESD) may not appear to be  
affected at all and can work perfectly throughout a normal cycle. The device may function  
normally for a while, but it has been degraded in the internal layers, reducing its life expectancy.  
Networks built into many integrated circuits provide some protection, but in many cases, the  
discharge contains enough power to alter device parameters or melt silicon junctions.  
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5.2.1 Generating Static  
The following table shows that:  
Different activities generate different amounts of static electricity.  
Static electricity increases as humidity decreases.  
Relative Humidity  
40%  
Event  
55%  
10%  
Walking across carpet  
7,500 V  
3,000 V  
400 V  
15,000 V  
5,000 V  
800 V  
35,000 V  
12,000 V  
6,000 V  
2,000 V  
Walking across vinyl floor  
Motions of bench worker  
Removing DIPs* from plastic tube  
400 V  
700 V  
Removing DIPs* from vinyl tray  
Removing DIPs* from Styrofoam  
Removing bubble pack from PCB  
Packing PCBs in foam-lined box  
2,000 V  
3,500 V  
7,000 V  
5,000 V  
4,000 V  
5,000 V  
20,000 V  
11,000 V  
11,500 V  
14,500 V  
26,500 V  
21,000 V  
*These components are multi-packaged inside plastic tubes, trays, or Styrofoam.  
700 volts can degrade a product.  
5.2.2 Preventing Electrostatic Damage to Equipment  
Many electronic components are sensitive to ESD. Circuitry design and structure determine the  
degree of sensitivity. The following packaging and grounding precautions are necessary to  
prevent damage to electric components and accessories.  
To avoid hand contact, transport products in static-safe containers such as tubes, bags, or  
boxes.  
Protect all electrostatic parts and assemblies with conductive or approved containers or  
packaging.  
Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.  
Place items on a grounded surface before removing them from their container.  
Always be properly grounded when touching a sensitive component or assembly.  
Avoid contact with pins, leads, or circuitry.  
Place reusable electrostatic-sensitive parts from assemblies in protective packaging or  
conductive foam.  
5.2.3 Personal Grounding Methods and Equipment  
Use the following equipment to prevent static electricity damage to equipment:  
Wrist straps are flexible straps with a maximum of one-megohm 10% resistance in the  
ground cords. To provide proper ground, you must wear a strap snug against bare skin. The  
ground cord must be connected and fit snugly into the banana plug connector on the  
grounding mat or workstation.  
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Heel straps/Toe straps/Boot straps can be used at standing workstations and are  
compatible with most types of shoes or boots. On conductive floors or dissipative floor mats,  
use them on both feet with a maximum of one-megohm 10% resistance between the  
operator and ground.  
Static Shielding Protection Levels  
Method  
Voltage  
Antistatic plastic  
Carbon-loaded plastic  
Metallized laminate  
1,500  
7,500  
15,000  
5.2.4 Grounding the Work Area  
To prevent static damage at the work area, use the following precautions:  
Cover the work surface with approved static-dissipative material. Provide a wrist strap  
connected to the work surface and properly grounded tools and equipment.  
Use static-dissipative mats, foot straps, or air ionizers to give added protection.  
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB  
laminate. Handle them only at static-free work areas.  
Turn off power and input signals before inserting and removing connectors or test  
equipment.  
Use fixtures made of static-safe materials when fixtures must directly contact dissipative  
surfaces.  
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and  
Styrofoam.  
Use conductive field service tools, such as cutters, screwdrivers, and vacuums.  
5.2.5 Recommended Materials and Equipment  
Materials and equipment recommended for use in preventing static electricity include:  
Antistatic tape  
Antistatic smocks, aprons, or sleeve protectors  
Conductive bins and other assembly or soldering aids  
Conductive foam  
Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance  
Static-dissipative table or floor mats with hard tie to ground  
Field service kits  
Static awareness labels  
Wrist straps and footwear straps providing one-megohm +/- 10% resistance  
Material handling packages  
Conductive plastic bags  
Conductive plastic tubes  
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Conductive tote boxes  
Opaque shielding bags  
Transparent metallized shielding bags  
Transparent shielding tubes  
5.3 Operating Guidelines  
To prevent overheating and to help prolong the life of the computer:  
Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and  
cold.  
Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all  
vented sides of the computer and above the monitor to permit the required airflow.  
Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place  
the keyboard, with the keyboard feet down, directly against the front of the desktop unit as  
this also restricts airflow.  
Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other  
foreign matter can block the vents and limit the airflow.  
Never operate the computer with the cover or side panel removed.  
Do not stack computers on top of each other or place computers so near each other that they  
are subject to each other’s re-circulated or preheated air.  
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation  
must be provided on the enclosure, and the same operating guidelines listed above will still  
apply.  
The computer is designed to operate continuously (24x7), provided that the operating  
guidelines listed above are met.  
Install or enable power management functions of the operating system or other software,  
including sleep states.  
5.4 Routine Care  
5.4.1 General Cleaning Safety Precautions  
1. Never use solvents or flammable solutions to clean the computer.  
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth  
and then use the cloth on the component.  
3. Always unplug the computer when cleaning with liquids or damp cloths.  
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.  
5. Disconnect the keyboard before cleaning it.  
6. Wear safety glasses equipped with side shields when cleaning the keyboard.  
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5.4.2 Cleaning the Computer Case  
Follow all safety precautions in Section 5.4.1, “General Cleaning Safety Precautions,” before  
cleaning the computer.  
To clean the computer case, follow the procedures described below:  
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.  
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it  
with a cloth or swab dampened with clear water.  
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will  
evaporate quickly and not leave a residue.  
After cleaning, always wipe the unit with a clean, lint-free cloth.  
Occasionally clean the air vents on the computer. Lint and other foreign matter can block the  
vents and limit the airflow.  
5.4.3 Cleaning the Keyboard  
Follow all safety precautions in Section 5.4.1, “General Cleaning Safety Precautions,” before  
cleaning the keyboard.  
To clean the tops of the keys or the keyboard body, follow the procedures described in  
When cleaning debris from under the keys, review all rules in Section 5.4.1, “General Cleaning  
Safety Precautions,” before following these procedures:  
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under  
the keys.  
Ä
You may remove visible debris underneath or between the keys by vacuuming or shaking.  
You may use canned, pressurized air to clean debris from under the keys. Use caution, as too  
much air pressure can dislodge lubricants applied under the wide keys.  
If you remove a key, use a specially designed key puller to prevent damage to the keys. This  
tool is available through many electronic supply outlets.  
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are  
improperly removed or installed, the keyboard may not function properly.  
Ä
Clean under a key with a swab moistened with isopropyl alcohol and squeezed out. Be  
careful not to wipe away lubricants necessary for proper key functions. Use tweezers to  
remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.  
5.4.4 Cleaning the Monitor  
Wipe the monitor screen with a clean cloth moistened with water or with a towelette  
designed for cleaning monitors. Do not use sprays or aerosols directly on the screen; the  
liquid may seep into the housing and damage a component. Never use solvents or flammable  
liquids on the monitor.  
To clean the monitor body, follow the procedures in Section 5.4.2, “Cleaning the Computer  
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5.4.5 Cleaning the Mouse  
Before cleaning the mouse, ensure that the power to the computer is turned off.  
Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull  
out any debris from the ball socket and wipe the ball with a clean, dry cloth before  
reassembly.  
To clean the mouse body, follow the procedures in Section 5.4, “Routine Care.”  
5.5 Service Considerations  
Listed below are some of the considerations that you should keep in mind during the disassembly  
and assembly of the computer.  
5.5.1 Power Supply Fan  
The power supply fan is a variable-speed fan based on the temperature in the power supply.  
CAUTION: The cooling fan is always on when the computer is either in the “On,” “Standby,” or  
Ä
“Suspend” modes. The cooling fan of off when the computer is in “Standby,” “Suspend,” or “OFF”  
modes.  
You must disconnect the power cord from the power source before opening the computer to prevent  
system board or component damage.  
5.5.2 Tools and Software Requirements  
To service the computer, you need the following:  
Torx T-15 screwdriver (Compaq screwdriver with bits, PN 161946-001)  
Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)  
Flat-bladed screwdriver (may sometimes use in place of the Torx screwdriver)  
Phillips #2 screwdriver  
Diagnostics software  
Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or  
Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)  
5.5.3 Screws  
The screws used in the computer are not interchangeable. They may have standard or metric  
threads and may be of different lengths. If an incorrect screw is used during the reassembly  
process, the screw can damage the unit. HP strongly recommends that you keep all screws  
removed during disassembly with the part that was removed, then returned to their proper  
locations.  
Metric screws have a black finish.  
U.S. screws have a silver finish and are used only for the hard drive.  
As you remove each subassembly from the computer, place the subassembly away from the work  
area to prevent damage.  
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5.5.4 Cables and Connectors  
Most cables used in the unit are flat, flexible cables. You just handle these cables with care to  
avoid damage. Apply only the tension required to seat or unseat the cables during insertion or  
removal from the connector. Handle cables by the connector whenever possible. In all cases,  
avoid bending or twisting the cables, and ensure that the cables are routed in such a way that they  
cannot be caught or snagged by parts being removed or replaced.  
CAUTION: When servicing this computer, ensure that you place cables in their proper location during  
the reassembly process. Improper cable placement can damage the computer.  
Ä
5.5.5 Hard Drives  
Handle hard drives as delicate, precision components, avoiding all physical shock and vibration.  
This applies to failed drives as well as replacement spares.  
If you must mail a drive, place the drive in a bubble-pack mailer or other suitable protective  
packaging and label the package “Fragile: Handle With Care.”  
Do not remove hard drives from the shipping package for storage. Keep hard drives in their  
protective packaging until they are mounted in the CPU.  
Avoid dropping drives from any height onto any surface.  
If you are inserting or removing a hard drive, turn off the computer. Do not remove a hard  
drive while the computer is on or in standby mode.  
Before handling a drive, discharge yourself of static electricity. While handling a drive,  
avoid touching the connector. For more information about preventing electrostatic damage,  
Do not use excessive force when inserting a drive.  
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic  
fields, such as monitors or speakers.  
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5.5.6 Lithium Coin Cell Battery  
The battery that comes with the computer provides power to the real-time clock and has a  
lifetime of about three years.  
See the appropriate removal and replacement chapter for the chassis you are working on in this  
guide for replacement procedures.  
WARNING: This computer contains a lithium battery. There is a risk of fire and chemical burns if the  
battery is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in  
water or fire, or expose it to temperatures higher than 60ºC (140ºF).  
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Ä
CAUTION: Batteries, battery packs, and accumulators should not be disposed of together with the  
general household waste.  
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6
Removal and Replacement Procedures—  
Microtower (MT) Chassis  
Adherence to the procedures and precautions described in this chapter is essential for proper  
service. After completing all necessary removal and replacement procedures, run the Diagnostics  
utility to verify that all components operate properly.  
Not all features listed in this guide are available on all computers.  
6.1 Preparation for Disassembly  
procedures.  
1. Remove/disengage any security devices that prohibit opening the computer (Section 6.2.1,  
2. Close any open software applications.  
3. Exit the operating system.  
4. Remove any diskette, compact disc, or MultiBay device from the computer.  
5. Turn off the computer and any peripheral devices that are connected to it.  
Ä CAUTION: Turn off the computer before disconnecting any cables.  
CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as  
Ä
the system is plugged into an active AC outlet. In some systems, the cooling fan is on even when the  
computer is in the “Standby” or “Suspend” mode. Always disconnect the power cord before servicing a  
unit.  
6. Disconnect the power cord from the electrical outlet and then from the computer.  
7. Disconnect all peripheral device cables from the computer.  
During disassembly, label each cable as you remove it, noting its position and routing. Keep all  
screws with the units removed.  
CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong  
screw in an application may damage the unit.  
Ä
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6.2 External Security Devices  
6.2.1 Installing a Cable Lock  
The cable lock may be used to secure the computer access panel to the chassis and, at the same  
time, secure the computer to a fixed object.  
6.2.2 Installing a Padlock  
A padlock may be used by itself to secure the access panel to the computer chassis. A padlock  
may also be used with a security cable to secure the computer to a fixed object.  
I
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6.3 Access Panel  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that  
the power cord is disconnected from the electrical outlet.  
Ä
2. Loosen the captive thumbscrew 1 that secures the access panel to the computer chassis.  
3. Slide the access panel 2 back about 2.5 cm (1 inch), then lift it off the unit.  
You may want to lay the computer on its side to install internal parts. Make sure the side with the  
access panel and pull grip is facing up.  
To install the access panel, reverse the removal procedure.  
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6.4 Front Bezel  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel (Section 6.3, “Access Panel”).  
3. To remove the front bezel, press in on the two bottom tabs on the side of the bezel 1 so that  
they release from the chassis. Then press in on the upper tab on the side of the bezel so that it  
releases from the chassis. The bezel will rotate out slightly 2.  
To reinstall the front bezel,  
1. Position the chassis in the upright position.  
2. Insert the two hooks on the right side of the bezel 1 into the rectangular holes on the chassis  
then rotate the bezel into place 2 so that the three tabs on the left side of the bezel and the  
single tab on the upper right corner of the bezel snap into the slots on the chassis.  
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6.5 Front Drive Bezels  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel (Section 6.3, “Access Panel”).  
3. Remove the front bezel (Section 6.4, “Front Bezel”)  
6.5.1 5.25" Drive Bezel Blank  
Press the two retaining tabs on the inside of the large bezel 1 towards the outside of the bezel to  
release the bezel blank. At the same time, pull the bezel blank in 2 to remove it from the front  
bezel.  
To install a bezel blank, reverse the removal procedure.  
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6.5.2 Diskette Drive Bezel  
Press the two upper 1 or the two lower 2 tabs for the diskette drive bezel towards the center of  
the drive bezel and push the bezel out to remove it from the front bezel.  
To install a bezel or a bezel blank, reverse the removal procedure.  
6.5.3 3.5" Drive Bezel Blank  
Press the two upper 1 or the two lower 2 tabs for the 3.5" drive bezel towards the center of the  
3.5" drive bezel and push the bezel blank out to remove it from the front bezel.  
To install a bezel blank, reverse the removal procedure.  
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6.6 Cable Management  
Always follow good cable management practices when working inside the computer.  
Keep cables away from major heat sources like the heatsink.  
Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like  
these are not designed to take excessive pressure on them.  
Keep cables clear of sliding or moveable parts to prevent their being cut or crimped when the  
parts are moved.  
When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the  
wires.  
Some flat ribbon cables come prefolded. Never change the folds on these cables.  
Do not bend any cable sharply. A sharp bend can break the internal wires.  
Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.  
Never crease a SATA data cable.  
Do not rely on components like the drive cage, power supply, or computer cover to push  
cables down into the chassis. Always position the cables to lay properly by themselves.  
When removing the power supply power cables from the P1 or P3 connectors on the system  
board, always follow these steps:  
1. Squeeze on the top of the retaining latch attached to the cable end of the connector 1.  
2. Grasp the cable end of the connector and pull it straight up 2.  
CAUTION: Always pull the connector - NEVER pull on the cable. Pulling on the cable could damage the  
cable and result in a failed power supply.  
Ä
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6.6.1 Cable Connections  
Cable  
Power Supply  
To  
Cable Designator  
System board  
System board  
1st SATA Hard drive  
2nd SATA Hard drive  
1st Optical drive  
2nd Optical drive  
Diskette drive  
5.25” Zip drive  
To  
P1  
P5  
P7  
P6  
P2  
P3  
P4  
P3  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Cable  
PCA Designator  
Diskette drive  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
FDD1 (Black)  
SATA 1 (Blue)  
SATA 2 (White)  
IDE1 (Blue)  
CD_IN1 (Black)  
AUX_IN1 (Yellow)  
CPU_FAN  
1st SATA Hard drive  
2nd SATA Hard drive  
ODD Data  
ODD Audio (if required)  
2nd ODD Audio (if required)  
Heatsink fan  
Secondary system fan  
Front LED power on button  
Front I/O USB  
CHASSIS_FAN  
F_P1  
JUSB1 (Yellow)  
AUD1 (Black)  
SPKR  
Front I/O Audio  
Speaker  
Serial port connector  
TCIP Security module  
COM1  
JTPM1  
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6.7 Memory Modules  
CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is  
important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation  
resulting from having incompatible metals in contact with each other.  
Ä
Static electricity can damage the electronic components of the computer or optional cards. Before  
beginning these procedures, ensure that you are discharged of static electricity by briefly touching a  
grounded metal object. Refer to Chapter 5 for more information.  
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage  
the module.  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”). If you have locked the Smart  
Cover Lock, use Computer Setup to unlock the lock.  
WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to  
cool before touching.  
Å
3. Open both latches of the memory module socket 1, and insert the memory module into the  
socket 2. Begin by installing a module into the socket nearest the preinstalled module, and  
install the modules following the numerical order of the sockets.  
You can install a memory module in only one way. Match the notch on the module with the tab  
on the memory socket.  
4. Push the module down into the socket, ensuring that the module is fully inserted and  
properly seated. Make sure the latches are in the closed position 3.  
5. Repeat steps 3 and 4 for any additional modules that you want to install.  
To reassemble the computer, reverse the removal procedure.  
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6.8 Expansion Cards  
6.8.1 Expansion Slot Cover  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. On the rear of the computer, remove the retaining screw and slide the slot cover lock up to  
access the expansion slot covers.  
For instructions on PCI expansion cards see Section 6.8.2, “PCI Expansion Card.”  
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6.8.2 PCI Expansion Card  
1. Lay the computer on its side with the open side facing up.  
If replacing a PCI expansion card go to step 2.  
If installing a PCI expansion card for the first time in a computer, skip to step 5.  
2. When removing an expansion card from a standard expansion socket, hold the card at each  
end, and carefully rock it back and forth until the connectors pull free from the socket.  
3. Pull the expansion card straight up from the socket 1 then away from the inside of the  
chassis 2 to maneuver the card out of the computer.  
ÄCAUTION: Make sure not to scrape the card against the other components.  
CAUTION: After removing an expansion card, you must replace it with a new card or cover the open  
Ä
slot (for example, with a metal slot cover or a piece of cardboard taped in place) for proper cooling of  
internal components during operation.  
4. Store the old card in the anti-static packaging that contained the new card.  
5. If you are installing a PCI expansion card for the first time in this computer, you will need to  
remove the correct expansion slot cover at this time.  
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6. When installing an expansion card, hold the card just above the expansion slot on the system  
board then move the card toward the rear of the chassis so that the bracket on the card is  
aligned with the open slot on the rear of the chassis 1.  
7. Press the card straight down into the expansion slot on the system board 2.  
Press firmly on the card so that the whole connector seats properly in the expansion card slot.  
8. Slide the slot cover lock down toward the expansion card brackets and slot covers to secure  
them in place.  
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6.9 Drives  
The computer supports up to six drives that may be installed in various configurations.  
This Section describes the procedure for replacing or upgrading the storage drives. A Torx T-15  
screwdriver is needed to remove and install the guide screws on a drive.  
CAUTION: Make sure personal files on the hard drive are backed up to an external storage device  
before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard  
drive, you will need to run the Restore CD to load the factory-installed files.  
Ä
6.9.1 Drive Positions  
Drive Positions  
Item  
1
Description  
Item  
4
Description  
Optical drive*  
Bay for optional 3.5" drive  
Primary hard drive  
Optional hard drive  
2
Second optical drive  
Diskette drive (optional)  
5
3
6
* CD-ROM, CD-R/RW, DVD-ROM, DVD-R/RW, or CD-RW/DVD Combo drive.  
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Removal and Replacement Procedures— Microtower (MT) Chassis  
6.9.2 Removing a Drive  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Remove the front bezel (Section 6.4, “Front Bezel”).  
4. Disconnect the audio, data, and power cables from the back of the drive, as shown in the  
following illustrations:  
Disconnecting Optical Drive Cables  
Audio cable is 1, data cable is 2, and power cable is 3.  
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Disconnecting Diskette Drive Cables  
Data cable is 1 and power cable is 2.  
Disconnecting Hard Drive Cables  
Power cable is 1, data cable is 2.  
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Releasing the Drives  
5. A latch drive bracket with release tabs secures the drives in the drive bay. Lift the release tab  
on the latch drive bracket 1 for the drive you want to remove, then slide the drive from its  
drive bay 2.  
6. Remove the four guide screws (two on each side) from the old drive. You will need these  
screws to install a new drive.  
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6.9.3 Installing a Drive  
ÄCAUTION: To prevent loss of work and damage to the computer or drive:  
If you are inserting or removing a hard drive, shut down the operating system properly, then turn off  
the computer. Do not remove a hard drive while the computer is on or in standby mode.  
Before handling a drive, ensure that you are discharged of static electricity. While handling a drive,  
avoid touching the connector. For more information about preventing electrostatic damage, refer to  
information  
Handle a drive carefully; do not drop it.  
Do not use excessive force when inserting a drive.  
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields  
such as monitors or speakers.  
1. Install four guide screws (two on each side) into the new drive. The screws help guide the  
drive into its proper position in the bay.  
If this is a new installation, guide screws are provided on the front of the chassis under  
the front bezel.  
If this is a replacement drive, use the screws taken from the old drive.  
There are a total of eight extra guide screws on the front of the chassis. Four have U.S. threads  
and four have metric threads. Metric screws have a black finish. U.S. threaded screws have a  
silver finish and are only used for hard drives. Make sure to install the appropriate guide screws  
into the drive.  
2. Align the guide screws with the guide slots, then slide the drive into the drive bay, making  
sure it is fully seated.  
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Removal and Replacement Procedures— Microtower (MT) Chassis  
3. Reconnect all cables to the drive as shown in the following illustrations.  
Refer to Chapter 4, Section 4.3, “PATA Drive Installation Guidelines,” for information on  
attaching the cabling to get optimum performance.  
Connecting Optical Drive Cables  
Audio cable is 1, data cable is 2, power cable is 3.  
Connecting Diskette Drive Cables  
Data cable is 1, power cable is 2.  
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Connecting Hard Drive Cables  
Power cable is 1, data cable is 2.  
4. Install the front bezel (Section 6.4, “Front Bezel”).  
5. Install the access panel (Section 6.3, “Access Panel”).  
6. Turn on the computer.  
If you replaced the primary hard drive, you may use the restore CD to restore the operating  
system, software drivers, and/or any software applications that were preinstalled on the  
computer. Follow the instructions in the guide included with the restore CD. When the restore  
process has completed, reinstall any personal files that were backed up before replacing the hard  
drive.  
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Removal and Replacement Procedures— Microtower (MT) Chassis  
6.10 Chassis Fan  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Disconnect the power cable that connects the chassis fan to the system board 1.  
4. Remove the four screws from the rear of the chassis 2 that secure the fan.  
5. Remove the fan from the chassis 3.  
To install the chassis fan, reverse the removal procedure.  
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6.11 Front I/O Panel Housing Assembly  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Disconnect the following three attaching cables from the system board:  
power switch/LED cable  
front USB cable  
front audio cable  
4. Remove the two screws 1 that secure the housing to the chassis and then pull the housing 2  
away from the chassis.  
To install the housing assembly, reverse the removal procedures.  
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6.12 Front I/O Devices  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Remove the front I/O panel assembly (Section 6.11, “Front I/O Panel Housing Assembly”).  
4. Remove the two screws 1 that hold the USB and audio port assembly in place.  
5. Remove the I/O device assembly from the I/O panel 2 by pushing it out of the housing.  
To install the I/O devices, reverse the removal procedures and then reinstall the housing  
assembly.  
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6.13 Power Switch Assembly  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Remove the front I/O panel assembly (Section 6.11, “Front I/O Panel Housing Assembly”).  
4. Squeeze the switch holder retaining clips together 1 and push the switch assembly out of the  
front I/O panel housing.  
5. From the inside of the I/O panel assembly, spread the clips 2 that secure the LEDs in place,  
and then push the LEDs out of the retainers from the front side.  
6. If necessary, compress the retaining clips on the LED holders and push the holders out of the  
front of the I/O panel housing.  
7. Remove the switch from the switch holder 3.  
8. To install the power switch assembly install the switch into the switch holder.  
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9. Place the switch holder with switch installed into the inside of the front I/O panel housing  
and position the legs of the retaining clip into the clip slots. Press firmly so that the clips will  
penetrate the slot openings and latch into place. If one clip will not easily engage, it may be  
necessary to use the end of a ball point pen (or another thin, stiff object) to compress the clip  
leg while inserting it into the clip slot.  
10. Push the LEDs into the their retainers. The power LED (having the blue and black leads)  
should be to the right when viewed from the front of the computer.  
11. Reconnect the housing assembly to the front of the chassis and reconnect the cables to the  
system board.  
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6.14 Heatsink  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Disconnect the heatsink fan cable 1 from the system board.  
4. Loosen the two screws 2 that secure the heatsink to the processor.  
5. Twist the heatsink to break the bond between it and the processor.  
6. Lift the heatsink 3 from the processor.  
To install a heatsink, reverse the removal procedure.  
ÄCAUTION: Always refresh the thermal grease when reinstalling a heatsink.  
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6.15 Processor  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Remove the heatsink (Section 6.14, “Heatsink”)  
4. Rotate the ZIF socket handle to its fully open position 1.  
5. Carefully lift the processor from the socket 2.  
To install a new processor:  
1. Insert the processor into the socket.  
2. Secure the locking lever.  
3. If reusing the existing heatsink clean bottom of the heatsink and apply the thermal grease  
found in the spares kit to the top of the processor.  
4. Clean the bottom of the heatsink with the provided alcohol pad and place it atop the  
processor.  
5. If using a new heatsink, remove the protective covering from the bottom of the heatsink and  
place it in position atop the processor.  
6. Secure the heatsink to the system board and system board tray with the two captive screws  
and attach the heatsink control cable to the system board.  
After installing a new processor onto the system board, always update the system ROM to ensure  
that the computer is using the latest version of the BIOS. You can find the latest system ROMPaq  
on the Web at: http://h18000.www1.hp.com/support/files.  
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6.16 System Board  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Remove all PCI expansion cards (Section 6.8.2, “PCI Expansion Card”).  
4. Remove the memory modules (Section 6.7, “Memory Modules”).  
5. Remove the heatsink (Section 6.14, “Heatsink”).  
6. Remove the processor (Section 6.15, “Processor”).  
7. Disconnect all cables connected to the system board, noting their location for reinstallation.  
8. Remove the eight screws that secure the system board to the chassis, then slide the board  
toward the front of the computer until the rear I/O connectors clear the chassis.  
CAUTION: When installing a new system board, you must attach a new processor backing  
plate to the system board. The heatsink will not attach properly if this plate is not installed.  
Ä
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To install a processor backing plate:  
1. Lay the new system board top down on a padded surface to protect the board from damage.  
2. Remove the protective paper shield 1 from the mounting surface of the backing plate.  
3. Position the mounting plate studs over the back of the sytem board 2 and press the plate  
firmly to the system board so the studs penetrate the mounting holes.  
To complete the installation of the system board, reverse the removal procedures.  
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6.17 Battery  
The battery that comes with your computer provides power to the real-time clock and has a  
lifetime of about three years. When replacing the battery, use a battery equivalent to the battery  
originally installed on the computer. The computer comes with a 3-volt lithium coin cell battery.  
You can extend the lifetime of the lithium battery by plugging the computer into a live AC wall  
socket. The computer uses the lithium battery only when NOT connected to AC power.  
WARNING: This computer contains an internal lithium manganese dioxide battery. There is a risk of fire and  
Å
chemical burns if the battery is not handled properly. To reduce the risk of personal injury:  
Do not attempt to recharge the battery.  
Do not expose to temperatures higher than 140°F (60°C)  
Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or  
water.  
Replace the battery only with the HP/Compaq spare designated for this product.  
CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When  
the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting  
Guide for information on backing up the CMOS settings.  
Ä
N
Batteries, battery packs, and accumulators should not be disposed of together with the general  
household waste. In order to forward them to recycling or proper disposal, please use the public  
collection system or return them to HP/Compaq, their authorized partners, or their agents.  
CAUTION: Static electricity can damage the electronic components of the computer or optional  
equipment. Before beginning these procedures, ensure that you are discharged of static electricity by  
briefly touching a grounded metal object.  
Ä
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
You may need to remove an expansion card to gain access to the battery.  
3. Locate the battery and battery holder on the system board.  
4. Depending on the type of battery holder on your system board, complete the following  
instructions to replace the battery:  
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6.17.1 Type 1 Battery Holder  
1. Lift the battery out of its holder.  
2. Slide the replacement battery into position, positive side up. The battery holder automatically  
secures the battery in the proper position.  
3. Replace the computer cover or access panel (Section 6.3, “Access Panel”).  
4. Plug in and turn on power to the computer.  
5. Using Computer Setup, reset the date and time, passwords, and any special system setups.  
For more information, refer to the Computer Setup (F10) Utility Guide.  
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6.17.2 Type 2 Battery Holder  
1. To release the battery from its holder, squeeze the metal clamp that extends above one edge  
of the battery 1. When the battery pops up, lift it out.  
2. To insert the new battery, slide one edge of the replacement battery under the holder’s lip 2  
with the positive side up. Push the other edge down until the clamp snaps over the other edge  
of the battery.  
After replacing the battery, use the following steps to complete this procedure.  
3. Replace the computer cover or access panel (Section 6.3, “Access Panel”).  
4. Plug in and turn on power to the computer.  
5. Using Computer Setup, reset the date and time, passwords, and any special system setups.  
For more information, refer to the Computer Setup (F10) Utility Guide.  
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6.17.3 Type 3 Battery Holder  
1. To release the battery from its holder, press back lever 1 that extends above one edge of the  
battery.  
2. When the battery pops up, lift it out 2.  
3. To insert the new battery, push it down into the holder with the positive side to the left as  
shown in the drawing above.  
4. Replace the computer access panel (Section 6.3, “Access Panel”).  
5. Plug in the computer and turn on power.  
6. Using Computer Setup, reset the date and time, passwords, and any special system setups.  
For more information, refer to the Computer Setup (F10) Utility Guide.  
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6.18 Speaker  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Move/remove any components necessary to gain access to the speaker.  
4. Disconnect the speaker wire from the system board connector.  
5. Remove the two screws 1, that secure the speaker to the chassis.  
6. Remove the speaker 2.  
To install the speaker, reverse the removal procedures.  
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6.19 Power Supply  
WARNING: Voltage is always present on the system board when the computer is plugged into an  
Å
active AC outlet. To avoid possible personal injury and damage to the equipment, disconnect the power  
cord from the computer and/or the AC outlet before opening the computer.  
1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 6.3, “Access Panel”).  
3. Disconnect all power cables from the mass storage devices and from the system board.  
4. Remove the screws that connect the power supply to the chassis 1.  
5. Slide the power supply toward the front of the computer, then lift it out of the computer 2.  
To install the power supply, reverse the removal procedure.  
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7
Removal and Replacement Procedures—  
Small Form Factor (SFF) Chassis  
Adherence to the procedures and precautions described in this chapter is essential for proper  
service. After completing all necessary removal and replacement procedures, run the Diagnostics  
utility to verify that all components operate properly.  
Not all features listed in this guide are available on all computers.  
7.1 Preparation for Disassembly  
procedures.  
1. Remove/disengage any security devices that prohibit opening the computer (Section 7.2,  
2. Close any open software applications.  
3. Exit the operating system.  
4. Remove any diskette, compact disc, or MultiBay device from the computer.  
5. Turn off the computer and any peripheral devices that are connected to it.  
Ä CAUTION: Turn off the computer before disconnecting any cables.  
CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as  
Ä
the system is plugged into an active AC outlet. In some systems the cooling fan is on even when the  
computer is in the “Standby” or “Suspend” modes. Always disconnect the power cord before servicing a  
unit.  
6. Disconnect the power cord from the electrical outlet and then from the computer.  
7. Disconnect all peripheral device cables from the computer.  
During disassembly, label each cable as you remove it, noting its position and routing. Keep all  
screws with the units removed.  
CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong  
screw in an application may damage the unit.  
Ä
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.2 External Security Devices  
7.2.1 Cable Lock  
The cable lock may be used to secure the computer access panel to the chassis and, at the same  
time, secure the computer to a fixed object.  
As shown, there are two acceptable methods for using the cable lock. While both methods work,  
for added security, HP recommends that you use the method shown on the left where the cable  
lock penetrates both the access panel and the chassis.  
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7.2.2 Padlock  
A padlock may be used by itself to secure the access panel to the computer chassis. A padlock  
may also be used with a security cable to secure the computer to a fixed object.  
I
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.3 Computer Access Panel  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that  
the power cord is disconnected from the electrical outlet.  
Ä
2. Pull up and hold open the latch on the top of the computer 1.  
3. Slide the computer access panel 2 back about 1.3 cm (0.5 inch), then lift it off the unit.  
When installing the access panel, press down on its center to ensure the latches are properly  
secured while sliding it into the locked position.  
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7.4 Front Bezel  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Pull up on the three release tabs 1 on the top of the bezel, then pull the front bezel away  
from the chassis 2.  
To reinstall the front bezel, reverse the removal procedure  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.5 Front Drive Bezels  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel”).  
4. Press the large retaining tab 1 on the side of the bezel insert as shown then, push the bezel  
insert out of the front bezel 2.  
To install a bezel or a bezel blank, reverse the removal procedure.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.6 Memory Modules  
CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is  
important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation  
resulting from having incompatible metals in contact with each other.  
Ä
Ä
CAUTION: Static electricity can damage the electronic components of the computer or optional cards.  
Before beginning these procedures, ensure that you discharge yourself of static electricity by briefly  
touching a grounded metal object. Refer to Chapter 5, “Identifying the Chassis, Routine Care, and  
Disassembly Preparation,” for more information.  
CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so  
Ä
Å
may damage the module.  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to  
cool before touching.  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its full upright position.  
5. Open both latches of the memory module socket 1, and insert the memory module into the  
socket 2. Begin by installing a module into the socket nearest the preinstalled module, and  
install the modules following the numerical order of the sockets.  
A memory module can be installed in only one way. Match the notch on the module with the tab  
on the memory socket.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
6. Push the module down into the socket, ensuring that the module is fully inserted and  
properly seated. Make sure the latches are in the closed position 3.  
7. Repeat steps 4 and 5 for any additional modules that you want to install.  
The computer automatically recognizes the additional memory when the computer is turned on.  
To reassemble the computer, reverse the removal procedure.  
If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable  
the Smart Cover Sensor.  
7.7 PCI Expansion Card  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Disconnect all cables attached to the expansion cards.  
4. Release the expansion card latch 1 that secures the PCI slot covers by pulling the latch up.  
5. If you are installing a card for the first time continue with step 6.  
If you are removing an existing card go to step 7.  
6. Remove the slot cover by sliding it up and off 2.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7. If you are removing an expansion card from a PCI expansion socket, hold the card at each  
end and carefully rock it back and forth until the connectors pull free from the socket. Lift  
the expansion card straight up then pull it in toward the center of the chassis to release it from  
the chassis frame. Make sure not to scrape the card against other components.  
8. Place the card under the rear panel bracket 1, then firmly push the expansion card into the  
connector 2. Ensure that the card is firmly seated in the expansion card slot.  
Be sure not to touch the rear panel bracket or other components in the chassis when installing an  
expansion card.  
9. Push the expansion slot latch down 3 to secure the card.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
If you are not replacing the old expansion card with a new card, install an expansion slot cover to  
close the open slot. Insert the metal slot covering the open slot, then push the expansion slot latch  
down to secure the slot cover in place  
CAUTION: After removing an expansion card, you must replace it with a new card or cover the open  
Ä
slot with a metal slot cover or a piece of tape for proper cooling of internal components. Failure to do so  
may cause the system to overheat.  
7.8 Drives  
The computer supports up to three drives. This section describes the procedure for replacing or  
upgrading the storage drives. You need a Torx T-15 screwdriver to remove and install the guide  
screws on a drive.  
CAUTION: Make sure personal files on the hard drive are backed up to an external storage device  
Ä
before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard  
drive, you need to run the Restore Plus! CD to load the factory-installed files.  
7.8.1 Drive Positions  
Drive Positions  
Item Description  
Item Description  
Internal 3.5-inch, one-third height bay  
for hard drive  
1
One standard 3.5-inch, one-third  
3
height bay (1.44-MB diskette drive  
shown)*  
2
5.25-inch drive bay for optional  
drives.  
*If a 1.44-MB diskette drive is installed, it is configured with a diskette drive bezel as shown in  
the illustration. If the computer contains an empty 3.5-inch drive bay, then a bezel blank is  
installed instead. If you do not have a drive in this slot, you may later choose to install a 3.5-inch  
device (such as a diskette drive, hard drive, or Zip drive). However, to install a 3.5-inch device  
other than a diskette drive or hard drive, you must order the 3.5-inch device bezel to provide  
proper air flow within the chassis.  
To verify the type and size of the storage device installed in the computer, run Computer Setup.  
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7.8.2 Cable Management  
CAUTION: You must keep the drive data and power cables clear of the power supply and the power  
supply fan to avoid damage or restrict air flow.  
Ä
Follow these guidelines when routing the cables in the computer:  
1. Route the optical drive audio cable 1 (if needed) along the back of the optical drive and then  
down, alongside of the drive cage to the floor of the chassis. Route this cable behind the hard  
drive data cable.  
2. Route the optical drive power cable 2 down, alongside of the drive cage to the floor of the  
chassis. Keep the cable clear of the power supply fan.  
3. Fold the diskette drive flat-ribbon data cable 3 near the connector on the drive. Route the  
cable up high on the drive cage (near the cable connectors), then folding again to lay beneath  
the optical drive data cable.  
4. The cable clip 4 is stamped from the back of the drive cage and secures the diskette drive  
power cable.  
Always follow good cable management practices when working inside the computer.  
Keep cables away from major heat sources like the heatsink.  
Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like  
these are not designed to take excessive pressure.  
Keep cables clear of sliding or moveable parts to prevent their being cut or crimped when the  
parts are moved.  
When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the  
wires.  
Some flat ribbon cables come prefolded. Never change the folds on these cables.  
Do not bend any cable sharply. A sharp bend can break the internal wires.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.  
Never crease a SATA data cable.  
Do not rely on components like the drive cage, power supply, or computer cover to push  
cables down into the chassis. Always position the cables to lay properly by themselves.  
When removing the power supply power cables from the P1 or P3 connectors on the system  
board, always follow these steps:  
1. Squeeze on the top of the retaining latch attached to the cable end of the connector 1.  
2. Grasp the cable end of the connector and pull it straight up 2.  
CAUTION: Always pull the connector - NEVER pull on the cable. Pulling on the cable could damage the  
cable and result in a failed power supply.  
Ä
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7.8.3 Cable Connections  
Cable  
Power Supply  
To  
System board (ATX1)  
System board (JPW1)  
1st SATA Hard drive  
2nd SATA Hard drive  
Optical drive  
Cable Designator  
P1  
P2  
P5  
P3  
P6  
P4  
P6  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Power Supply  
Diskette drive  
5.25” Zip drive  
To  
Power Supply  
Cable  
PCA Designator  
Diskette drive  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
System board  
FDD1 (Black)  
IDE1 (Blue)  
CD_IN1 (Black)  
CPU_FAN  
ODD Data  
ODD Audio (if required)  
Heatsink fan  
Secondary system fan  
Front LED power on button  
Front I/O USB  
CHASSIS_FAN  
F_P1  
JUSB1 (Yellow)  
AUD1 (Black)  
SPKR  
Front I/O Audio  
Speaker  
Serial port connector  
1st SATA Hard drive  
2nd SATA Hard drive  
TCIP Security module  
COM1  
SATA 1 (Blue)  
SATA 2 (White)  
JTPM1  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.8.4 Optical Drive  
ÄCAUTION: Remove all media from the drives before removing the drive from the computer.  
An optical drive is a CD-ROM, CD-RW, DVD-ROM, or combination CD/DVD drive.  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel”).  
4. Raise the Easy Access drive cage to the upright position.  
5. Disconnect the audio, signal, and drive power cables from the drive. The other end of the  
cables should remain connected to the system board.  
6. Make sure you properly route the drive cables (Section 7.8.2, “Cable Management”).  
7. Return the Easy Access drive cage to the down position.  
8. Push the drive release latch 1 toward the rear of the chassis and hold.  
9. Slide the drive 2 toward the front of the drive cage, then lift the drive out of the computer.  
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To replace the drive:  
1. Install two guide screws in the lower holes on each side of the drive.  
CAUTION: Use only 5-mm long screws as guide screws. Longer screws can damage the internal  
components of the drive.  
Ä
When replacing the drive, transfer the four screws from the old drive to the new one. The screws  
take the place of drive rails.  
2. Position the guide screws on the drive into the J-slots in the drive bay 1. Then, slide the drive  
towards the rear of the computer 2.  
The drive release latch automatically locks in place when installing a drive.  
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3. Raise the Easy Access drive cage to the upright position and connect the flat ribbon cable  
and audio cable to the system board.  
4. Connect the following cables to the rear of the optical drive:  
Audio cable 1  
Flat ribbon data cable 2  
Power cable 3  
Windows XP does not require the use of an audio cable to transfer the sound to the system board.  
5. Make sure you route the drive cables properly (Section 7.8.2, “Cable Management”).  
6. Return the Easy Access drive cage to the down position. Make sure not to pinch the cables in  
the chassis when lowering the Easy Access drive cage.  
7. Replace the front bezel and computer access panel.  
The system automatically recognizes the drive and reconfigures the computer.  
CAUTION: When servicing the computer, make sure you place cables in their proper locations during  
the reassembly process. Improper cable placement can damage the computer.  
Ä
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.8.5 External 3.5-inch Drive  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel”).  
4. Raise the Easy Access drive cage to the upright position.  
5. Disconnect the signal, and drive power cables from the drive. The other end of the cables  
should remain connected to the system board.  
6. Return the Easy Access drive cage to the down position.  
7. Push the drive release latch 1 toward the rear of the chassis and hold.  
8. Slide the drive 2 toward the front of the drive cage, then lift the drive out of the computer.  
When replacing the drive, transfer the four screws from the old drive to the new one. The screws  
take the place of drive rails.  
The guide screws on a 3.5-inch diskette drive 1 are placed closer together than on the hard  
drive 2.  
9. Insert the rear screws of the hard drive into the rear J-slots. Slide the drive toward the back of  
the drive cage until the front screws are aligned with the front J-slots. Then lower the front of  
the drive. Continue to slide the drive all the way back until it locks into place.  
If replacing a diskette drive, all guide screws (front and rear) will line up on the J-slots. Insert the  
guide screws into the J-slots, then slide the drive toward the back of the drive cage until it locks  
into place.  
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10. Connect the power and data cables.  
11. Make sure the drive cables are routed properly (Section 7.8.2, “Cable Management”).  
12. Rotate the drive cage to its original position.  
13. Replace the front bezel and computer access panel.  
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7.8.6 Primary Hard Drive  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel”).  
4. Raise the Easy Access drive cage to the upright position.  
5. Disconnect the power cable 1 and signal cable 2 from the back of the drive.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
6. Press and hold the drive release latch 1.  
7. Slide the drive to the right of the bay 2, then pull the drive from the bay 3.  
To replace the hard drive, reverse the above procedure.  
When replacing the hard drive, transfer the four screws from the old drive to the new one. The  
screws take the place of drive rails. You will need a Torx T-15 screwdriver to remove and  
re-install the guide screws.  
Make sure you route the drive cables properly (Section 7.8.2, “Cable Management”) before  
rotating the drive cage to its original position.  
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7.9 Front I/O Devices  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the front bezel (Section 7.4, “Front Bezel,”).  
3. Rotate the drive cage to its full open position.  
4. Disconnect the two I/O device cables from the system board:  
front USB cable pair  
front audio cable  
5. Remove the power supply from the chassis (Section 7.17, “Power Supply”).  
6. From the inside of the chassis, remove the two screws that secure the I/O device to the  
chassis 1, then pull the device into the chassis 2 to free it from its mount.  
You may need a stubby Torx T15 screwdriver to remove the retaining screws.  
To install the housing assembly, reverse the removal procedures.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.10 Power Switch Assembly  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the front bezel (Section 7.4, “Front Bezel,”).  
3. Rotate the drive cage to its full open position.  
4. Disconnect the power switch/LED cable from the system board.  
5. Squeeze the switch holder retaining clips together at the front of the chassis 1 and push the  
switch assembly out of the chassis 2.  
To install the power switch assembly, reverse the removal procedure.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.11 Speaker  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its upright position.  
5. Disconnect the speaker wire from the system board.  
6. Remove the two screws that secure the speaker to the chassis 1.  
You may need a stubby Torx T15 screwdriver to access the screws.  
7. Remove the speaker 2.  
To install the speaker, reverse the removal procedures.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.12 Chassis Fan  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its full open position.  
5. Disconnect the fan cable from the system board.  
6. Remove the four screws that secure the fan grill and the fan to the chassis 2, then pull the fan  
out of the chassis 3.  
You may need a stubby Torx T15 screwdriver to remove the retaining screws.  
.
To install the chassis fan, reverse the removal procedure.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.13 Battery  
The battery that comes with this computer provides power to the real-time clock and has a  
lifetime of about three years. When replacing the battery, use a battery equivalent to the battery  
originally installed on the computer. The computer comes with a 3-volt lithium coin cell battery.  
The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall  
socket. The lithium battery is only used when the computer is NOT connected to AC power.  
WARNING: This computer contains an internal lithium manganese dioxide battery. There is a risk of fire and  
Å
chemical burns if the battery is not handled properly. To reduce the risk of personal injury:  
Do not attempt to recharge the battery.  
Do not expose to temperatures higher than 140°F (60°C)  
Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or  
water.  
Replace the battery only with the HP/Compaq spare designated for this product.  
CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When  
the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting  
Guide for information on backing up the CMOS settings.  
Ä
N
Batteries, battery packs, and accumulators should not be disposed of together with the general  
household waste. In order to forward them to recycling or proper disposal, please use the public  
collection system or return them to HP/Compaq, their authorized partners, or their agents.  
CAUTION: Static electricity can damage the electronic components of the computer or optional  
equipment. Before beginning these procedures, ensure that you are discharged of static electricity by  
briefly touching a grounded metal object.  
Ä
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
You may have to remove an expansion card to gain access to the battery.  
3. Locate the battery and battery holder on the system board.  
4. Carefully pull the cable bundle out of the way to access the battery.  
5. Depending on the type of battery holder on your system board, complete the following  
instructions to replace the battery:  
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7.13.1 Type 1 Battery Holder  
1. Lift the battery out of its holder.  
2. Slide the replacement battery into position, positive side up.  
3. The battery holder automatically secures the battery in the proper position.  
4. Replace the computer cover or access panel.  
5. Plug in and turn on power to the computer.  
6. Using Computer Setup, reset the date and time, passwords, and any special system setups.  
For more information, refer to the Computer Setup (F10) Utility Guide.  
7–26  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.13.2 Type 2 Battery Holder  
1. To release the battery from its holder, squeeze the metal clamp that extends above one edge  
of the battery 1. When the battery pops up, lift it out.  
2. To insert the new battery, slide one edge of the replacement battery under the holder’s lip 2  
with the positive side up. Push the other edge down until the clamp snaps over the other edge  
of the battery.  
After replacing the battery, use the following steps to complete this procedure.  
3. Replace the computer cover or access panel.  
4. Plug in and turn on power to the computer.  
5. Using Computer Setup, reset the date and time, passwords, and any special system setups.  
For more information, refer to the Computer Setup (F10) Utility Guide.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.14 Heatsink Assembly  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its full open position.  
5. Disconnect the heatsink fan control cable from the system board.  
6. Loosen the two captive screws 1 that secure the heatsink to the system board.  
You will need a straight shanked, flat blade, or Torx T15 screwdriver to loosen the heatsink  
retaining screws.  
7. Twist the heatsink slightly to break the bond between it and the processor then, lift the  
heatsink from the processor 2  
8. Set the heatsink on its side to keep the thermal grease from getting on the work surface.  
If reinstalling this heatsink, make sure that you clean its mounting surface and the mounting  
surface of the processor with an alcohol pad then, apply a fresh coating of thermal grease to the  
top of the processor.  
ÄCAUTION: Failure to apply a fresh coating of thermal grease could cause the computer to overheat.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.15 Processor  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Remove the heatsink (Section 7.14, “Heatsink Assembly”)  
5. Rotate the socket handle to its fully open position 1.  
6. Carefully lift the processor from the socket 3.  
To install a new processor:  
1. Insert the processor into the socket.  
2. Secure the locking lever.  
3. If reusing the existing heatsink clean bottom of the heatsink and apply the thermal grease  
provided in the spares kit to the top of the processor.  
4. Clean the bottom of the heatsink with the provided alcohol pad and place it atop the  
processor.  
5. If using a new heatsink, remove the protective covering from the bottom of the heatsink and  
place it in position atop the processor.  
6. Secure the heatsink to the system board and system board tray with the two captive screws  
and attach the heatsink control cable to the system board.  
After installing a new processor onto the system board, always update the system ROM to ensure  
that the computer is using the latest version of the BIOS. You can find the latest system ROMPaq  
on the Web at: http://h18000.www1.hp.com/support/files.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.16 System Board  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the access panel and rotate the computer so the system board is parallel to the table  
to make it easier to work on (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its full open position.  
5. Remove all expansion cards (Section 7.7, “PCI Expansion Card”).  
6. Remove the memory modules (Section 7.6, “Memory Modules”).  
7. Remove the heatsink (Section 7.14, “Heatsink Assembly”).  
8. Remove the processor (Section 7.15, “Processor”).  
9. Disconnect all cables connected to the system board, noting their location for reinstallation.  
10. Remove the eight screws that secure the system board to the chassis.  
11. Slide the board towards the front of the computer for the rear I/O connectors to clear the  
chassis then, remove the system board from the chassis.  
CAUTION: When installing a new system board, a new processor backing plate must be  
attached to the system board. The heatsink will not attach properly if this plate is not  
installed.  
Ä
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
To install a processor backing plate:  
1. Lay the new system board top down on a padded surface to protect the board from damage.  
2. Remove the protective paper shield 1 from the mounting surface of the backing plate.  
3. Position the mounting plate studs over the back of the system board 2 and press the plate  
firmly to the system board so the studs penetrate the mounting holes.  
Complete the installation of the system board by reversing the removal procedures.  
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Removal and Replacement Procedures— Small Form Factor (SFF) Chassis  
7.17 Power Supply  
WARNING: Voltage is always present on the system board when the computer is plugged into an  
Å
active AC outlet. To avoid possible personal injury and damage to the equipment, disconnect the power  
cord from the computer and/or the AC outlet before opening the computer.  
1. Prepare the computer for disassembly (Section 7.1, “Preparation for Disassembly”).  
2. Remove the computer access panel (Section 7.3, “Computer Access Panel”).  
3. Remove the front bezel (Section 7.4, “Front Bezel,”).  
4. Rotate the drive cage to its upright position.  
5. Disconnect all power cables from the mass storage devices and from the system board.  
6. Remove the TPM from the system board to prevent damaging it.  
7. Remove the three screws that secure the power supply to the chassis 1.  
8. Slide the power supply forward about 3/8-inch, lift it to clear the guides on the floor of the  
chassis 2 then, pivot the top of the power supply 3 to clear the top chassis lip.  
When installing the power supply, reverse the removal procedure, making sure that the clips on  
the bottom of the rear panel fit in the slots provided.  
7–32  
361685-001  
Service Reference Guide, dx5150  
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A
Connector Pin Assignments  
This appendix contains the pin assignments for many computer and workstation connectors.  
Some of these connectors may not be used on the product being serviced.  
Keyboard  
Connector and Icon  
Pin  
Signal  
1
2
3
Data  
Unused  
Ground  
4
5
6
+5 VDC  
Clock  
Unused  
Mouse  
Connector and Icon  
Pin  
Signal  
1
2
3
Data  
Unused  
Ground  
4
5
6
+5 VDC  
Clock  
Unused  
Ethernet BNC  
Connector and Icon  
Pin  
Signal  
Data  
1 (Center)  
2 (Shield)  
Ground  
Service Reference Guide, dx5150  
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A–1  
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Connector Pin Assignments  
Ethernet RJ-45  
Connector and Icon  
Pin  
Signal  
1
2
3
4
(+) Transmit Data  
(-) Transmit Data  
(+) Receive Data  
Unused  
5
6
7
8
Unused  
(-) Receive Data  
Unused  
Unused  
Ethernet AUI  
Pin Signal  
Connector and Icon  
Pin Signal  
1
2
3
4
Ground  
9
10  
11  
12  
Positive AUI Differential Receive  
Negative AUI Differential Collision  
Positive AUI Differential Collision  
Negative AUI Differential Transmit  
+12V  
Ground  
Ground  
5
6
7
8
Positive AUI Differential Transmit  
Ground  
13  
14  
15  
16  
Unused  
Unused  
Unused  
Unused  
Ground  
Negative AUI Differential Receive  
Parallel Interface  
Connector and Icon  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
Strobe  
Data Bit 0  
Data Bit 1  
7
8
9
Data Bit 5  
Data Bit 6  
Data Bit 7  
13  
14  
15  
Select  
Auto Linefeed  
Error  
4
5
6
Data Bit 2  
Data Bit 3  
Data Bit 4  
10  
11  
12  
Acknowledge  
Busy  
Paper End  
16  
Initialize Printer  
Select IN  
Signal Ground  
17  
18-25  
A–2  
361685-001  
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Connector Pin Assignments  
Serial Interface, Powered and Non-Powered  
Connector and Icon  
Pin  
Signal  
1
2
3
Carrier Detect (12V if powered)  
Receive Data  
Transmit Data  
4
5
6
Data Terminal Ready  
Signal Ground  
Data Set Ready  
7
8
9
Request to Send  
Clear to Send  
Ring Indicator (5V if powered)  
USB  
Connector and Icon  
Pin  
Signal  
1
2
3
4
+5 VDC  
- Data  
+ Data  
Ground  
Microphone  
Connector and Icon (1/8” miniphone)  
Pin  
Signal  
Audio  
1 (Tip)  
2 (Ring)  
3 (Shield)  
1 2 3  
Power  
Ground  
Headphone  
Connector and Icon (1/8” miniphone)  
Pin  
Signal  
1 (Tip)  
2 (Ring)  
3 (Shield)  
Audio_Left  
Audio_Right  
Ground  
1 2 3  
Line-In Audio  
Connector and Icon (1/8” miniphone)  
Pin  
Signal  
1 (Tip)  
2 (Ring)  
3 (Shield)  
Audio_In_Left  
Audio_In_Right  
Ground  
1 2 3  
Service Reference Guide, dx5150  
361685-001  
A–3  
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Connector Pin Assignments  
Line-Out Audio  
Connector and Icon (1/8” miniphone)  
Pin  
Signal  
1 (Tip)  
2 (Ring)  
3 (Shield)  
Audio_Out_Left  
Audio_Out_Right  
Ground  
1 2 3  
SCSI Low Voltage Differential/Single Ended (LVD/SE)  
Connector and Icon  
Pin  
Signal  
Pin Signal  
Pin  
Signal  
Pin  
Signal  
1-16  
17-18  
19  
Ground  
TERMPWR  
Reserved  
40  
41  
42  
-D0  
-D1  
-D1  
49-50 Ground  
51-52 TERMPW  
60  
61  
62  
-MSG  
-SEL  
-C/D  
53  
Reserved  
20-34  
35  
36  
Ground  
-D12  
-D13  
43  
44  
45  
-D3  
-D4  
-D5  
54  
55  
56  
Ground  
-ATN  
Ground  
63  
64  
65  
-REQ  
-I/O  
-D  
37  
38  
39  
-D14  
-D15  
-DP1  
46  
47  
48  
-D6  
57  
58  
59  
-BSY  
-ACK  
-RST  
66  
67  
68  
-D  
-D  
-D  
-D7  
-DP0  
Ultra SCSI  
Connector and Icon  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1-11  
12  
Ground  
Reserved  
Open  
29  
30  
31  
32  
DB3  
DB4  
DB5  
DB6  
37  
38  
39  
40  
Reserved  
TERMPWR  
Reserved  
Ground  
45  
46  
47  
48  
RST #  
MSG #  
SEL #  
C/D  
13  
14  
Reserved  
15-25  
26  
Ground  
DB0  
33  
34  
35  
36  
DB7  
41  
42  
43  
44  
ATN #  
Ground  
BSY #  
49  
50  
REQ #  
Input/Output  
DBP  
27  
DB1  
Ground  
Ground  
28  
DB2  
ACK #  
A–4  
361685-001  
Service Reference Guide, dx5150  
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Connector Pin Assignments  
External Infrared Transceiver  
Connector and Icon  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
Transmit  
Receive  
Ground  
4
5
6
5V  
Mode  
Not Used  
7
8
Not Used  
Not Used  
Monitor  
Connector and Icon  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
Red Analog  
Green Analog  
Blue Analog  
6
7
8
Ground  
Ground  
Ground  
11  
12  
13  
Not used  
DDC Serial Data  
Horizontal Sync  
4
5
Not used  
Ground  
9
10  
+5V (fused)  
Ground  
14  
15  
Vertical Sync  
DDC Serial Clock  
DVI-D  
Connector and Icon  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
4
TMDS Data2-  
9
TMDS Data1-  
17  
18  
19  
20  
TMDS Data0-  
TMDS Data2+  
10  
11  
12  
TMDS Data1+  
TMDS Data1/3Shield  
TMDS Data3-  
TMDS Data0+  
TMDS Data2/4 Shield  
TMDS Data4-  
TMDS Data0/5 Shield  
TMDS Data5-  
5
6
7
8
TMDS Data4+  
DDC Clock  
DDC Data  
13  
14  
15  
16  
TMDS Data3+  
+5V Power  
Grd for +5V  
Hot Plug Detect  
21  
22  
23  
24  
TMDS Data5+  
TMDS Data Clock  
Shield  
TMDS Clock+  
TMDS Clock-  
No Connect  
Service Reference Guide, dx5150  
361685-001  
A–5  
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Connector Pin Assignments  
ATA/ATAPI (IDE) Standard Drive Cable  
Connector  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
1
2
3
4
5
Reset  
Ground  
DD7  
15  
16  
17  
18  
19  
DD1  
DD14  
DD0  
DD15  
Ground  
29  
30  
31  
32  
33  
DMAK  
Ground  
INTRQ  
IOCS16  
DA1  
DD8  
DD6  
6
DD9  
20  
21  
22  
23  
24  
(Key)  
34  
35  
36  
37  
38  
PDIAG (cable detect)  
7
DD5  
DMARQ  
Ground  
DIOW  
Ground  
DA0  
8
9
10  
DD10  
DD4  
DD11  
DA2  
CS1FX  
CS3FX  
11  
12  
13  
14  
DD3  
25  
26  
27  
28  
DIOR  
39  
40  
DASP  
Ground  
DD12  
DD2  
Ground  
IORDY  
CSEL  
DD13  
24-Pin Power  
Connector  
24  
13  
1
12  
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
1
2
3
4
5
6
+3.3 V  
+3.3 V  
GND  
+5 V  
GND  
+5 V  
7
GND  
13  
14  
15  
16  
17  
18  
+3.34 V  
-12 V  
19  
20  
21  
22  
23  
24  
GND  
open  
+5 V  
+5 V  
+5 V  
GND  
8
POK  
9
+5 Vaux  
+12 V  
+12 V  
+3.34 V  
GND  
10  
11  
12  
PSON  
GND  
GND  
A–6  
361685-001  
Service Reference Guide, dx5150  
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Connector Pin Assignments  
24-Pin MicroFit Power  
Connector  
24  
12  
13  
1
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
1
2
3
4
5
6
+5 Vaux  
GND  
+5 V  
+5 V  
PS_ON  
GND  
7
PWRGD  
13  
14  
15  
16  
17  
18  
+12 V  
19  
20  
21  
22  
23  
24  
GND  
8
+5 V Sense  
GND  
+3.3 Sense  
+3.3 V  
+3.3 V  
GND  
+3.3 V  
+3.3 V  
Tach  
GND  
Fan-CMD  
9
10  
11  
12  
+5 V  
+5 V  
+3.3 V  
-12 V  
4-Pin Power (for CPU)  
Connector and Icon  
Pin  
1
Signal  
GND  
2
GND  
3
+12 V CPU  
-12 V CPU  
4
SATA Data and Power  
Drive Connector  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
Pin  
Signal  
S1  
S5  
Ground  
B-  
S2  
S6  
A+  
B+  
S3  
S7  
A-  
Ground  
S4  
Ground  
P1  
P5  
P9  
P13  
V 3.3  
Ground  
V 5  
P2  
P6  
P10  
P14  
V 3.3  
P3  
P7  
P11  
P15  
V 3.3  
V 5  
Reserved  
V 12  
P4  
P8  
P12  
Ground  
V 5  
Ground  
Ground  
Ground  
V 12  
V 12  
*S = Data, P = Power  
Service Reference Guide, dx5150  
361685-001  
A–7  
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Connector Pin Assignments  
PCI Express  
x1, x4, x8, and x16 PCI Express Connector  
Pin A  
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
1
2
3
4
5
PRSNT1#  
+12V  
6
JTAG3  
JTAG4  
JTAG5  
+3.3v  
+3.3v  
11  
12  
13  
14  
15  
PERST#  
GND  
REFCLK+  
REFCLK-  
GND  
16  
17  
18  
19  
20  
PERp0  
PERn0  
GND  
RSVD  
GND  
21  
22  
23  
24  
25  
PERp1  
PERn1  
GND  
7
+12V  
8
9
10  
GND  
JTAG2  
GND  
PERp2  
26  
27  
28  
29  
30  
PERn(2)  
GND  
31  
32  
33  
34  
35  
GND  
RSVD  
RSVD  
GND  
PERp4  
36  
37  
38  
39  
40  
PERn4  
GND  
GND  
PERp5  
PERn5  
41  
42  
43  
44  
45  
GND  
GND  
PERp6  
PERn6  
GND  
46  
47  
48  
49  
50  
GND  
PERp7  
PERn7  
GND  
RSVD  
GND  
PERp3  
PERn3  
51  
52  
53  
54  
55  
GND  
PERp8  
PERn8  
GND  
GND  
56  
57  
58  
59  
60  
PERp9  
PERn9  
GND  
61  
PERn10  
GND  
66  
67  
68  
69  
70  
GND  
71  
72  
73  
74  
75  
GND  
GND  
PERp13  
PERn13  
GND  
62  
63  
64  
65  
GND  
PERp12  
PERn12  
GND  
GND  
PERp11  
PERn11  
PERp10  
GND  
76  
77  
78  
79  
80  
PERp14  
PERn14  
GND  
81  
82  
PERn15  
GND  
GND  
PERp15  
Pin B information is on the next page  
Notes:  
x1 PCI Express uses pins 1-18  
x4 PCI Express uses pins 1-32  
x8 PCI Express uses pins 1-49  
x16 PCI Express uses pins 1-82  
A–8  
361685-001  
Service Reference Guide, dx5150  
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Connector Pin Assignments  
PCI Express  
x1, x4, x8, and x16 PCI Express Connector  
Pin B  
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
Pin Signal  
1
2
3
4
5
+12V  
+12V  
RSVD  
GND  
SMCLK  
6
SMDAT  
GND  
11  
12  
13  
14  
15  
WAKE#  
RSVD  
16  
17  
18  
19  
20  
GND  
PRSNT2#  
GND  
PETp1  
PETn1  
21  
22  
23  
24  
25  
GND  
GND  
PETp2  
PETn2  
GND  
7
8
9
10  
+3.3v  
GND  
JTAG1  
3.3vAux  
PETp0  
PETn0  
26  
27  
28  
29  
30  
GND  
PETp3  
PETn3  
GND  
31  
32  
33  
34  
35  
PRSNT2#  
GND  
PETp4  
PETn4  
GND  
36  
37  
38  
39  
40  
GND  
PETp5  
PETn5  
GND  
GND  
41  
42  
43  
44  
45  
PETp6  
PRTn6  
GND  
GND  
PETp7  
46  
47  
48  
49  
50  
PETn7  
GND  
PRSNT2#  
GND  
PETp8  
RSVD  
51  
52  
53  
54  
55  
PETn8  
GND  
GND  
PETp9  
PETn9  
56  
57  
58  
59  
60  
GND  
61  
62  
63  
64  
65  
GND  
66  
67  
68  
69  
70  
PETp12  
PETn12  
GND  
71  
72  
73  
74  
75  
PETn13  
GND  
GND  
PETp11  
PETn11  
GND  
PETp10  
PETn10  
GND  
GND  
GND  
PETp14  
PETn14  
GND  
PETp13  
76  
77  
78  
79  
80  
GND  
81  
82  
PRSNT2#  
RSVD  
GND  
PETp15  
PETn15  
GND  
Notes:  
x1 PCI Express uses pins 1-18  
x4 PCI Express uses pins 1-32  
x8 PCI Express uses pins 1-49  
x16 PCI Express uses pins 1-82  
Service Reference Guide, dx5150  
361685-001  
A–9  
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Connector Pin Assignments  
A–10  
361685-001  
Service Reference Guide, dx5150  
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B
Power Cord Set Requirements  
The power supplies on some computers have external power switches. The voltage select switch  
feature on the computer permits it to operate from any line voltage between 100-120 or 220-240  
volts AC. Power supplies on those computers that do not have external power switches are  
equipped with internal switches that sense the incoming voltage and automatically switch to the  
proper voltage.  
The power cord set received with the computer meets the requirements for use in the country  
where you purchased the equipment.  
Power cord sets for use in other countries must meet the requirements of the country where you  
use the computer.  
General Requirements  
The requirements listed below are applicable to all countries:  
1. The power cord must be approved by an acceptable accredited agency responsible for  
evaluation in the country where the power cord set will be installed.  
2. The power cord set must have a minimum current capacity of 10A (7A Japan only) and a  
nominal voltage rating of 125 or 250 volts AC, as required by each country’s power system.  
3. The diameter of the wire must be a minimum of 0.75 mm2 or 18AWG, and the length of the  
cord must be between 1.8 m (6 feet) and 3.6 m (12 feet).  
The power cord should be routed so that it is not likely to be walked on or pinched by items  
placed upon it or against it. Particular attention should be paid to the plug, electrical outlet, and  
the point where the cord exits from the product.  
WARNING: Do not operate this product with a damaged power cord set. If the power cord set is  
damaged in any manner, replace it immediately.  
Å
Japanese Power Cord Requirements  
For use in Japan, use only the power cord received with this product.  
ÄCAUTION: Do not use the power cord received with this product on any other products.  
Service Reference Guide, dx7600  
361685-001  
B–1  
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Country-Specific Requirements  
Additional requirements specific to a country are shown in parentheses and explained below.  
Accrediting  
Agency  
Accrediting  
Agency  
Country  
Country  
Australia (1)  
Austria (1)  
Belgium (1)  
Canada (2)  
EANSW  
OVE  
CEBC  
CSA  
Italy (1)  
IMQ  
Japan (3)  
METI  
Norway (1)  
Sweden (1)  
NEMKO  
SEMKO  
Denmark (1)  
Finland (1)  
France (1)  
DEMKO  
SETI  
Switzerland (1)  
United Kingdom (1)  
United States (2)  
SEV  
BSI  
UL  
UTE  
Germany (1)  
VDE  
1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 0.75mm2 conductor size.  
Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of  
the agency responsible for evaluation in the country where it will be used.  
2. The flexible cord must be Type SVT or equivalent, No. 18 AWG, 3-conductor. The wall plug  
must be a two-pole grounding type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P  
(15A 250V) configuration.  
3. Appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration  
number in accordance with the Japanese Dentori Law. Flexible cord must be Type VCT or  
VCTF, 3-conductor, 0.75 mm2 conductor size. Wall plug must be a two-pole grounding type  
with a Japanese Industrial Standard C8303 (7A, 125V) configuration.  
B–2  
361685-001  
Service Reference Guide, dx5150  
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C
POST Error Messages  
This appendix lists the error codes, error messages, and the various indicator light and audible  
sequences that you may encounter during Power-On Self-Test (POST) or computer restart, the  
probable source of the problem, and steps you can take to resolve the error condition.  
POST Message Disabled suppresses most system messages during POST, such as memory count  
and non-error text messages. If a POST error occurs, the screen will display the error message.  
To manually switch to the POST Messages Enabled mode during POST, press the Tab key. The  
default mode is POST Message Disabled.  
The speed at which the computer loads the operating system and the extent to which it is tested  
are determined by the POST mode selection.  
Quick Power-On Self Test is a fast startup process that does not run all of the system level tests,  
such as the memory test. Disabling this feature causes all of the ROM-based system tests to run  
and booting takes longer to complete.  
Service Reference Guide, dx5150  
361685-001  
C–1  
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POST Error Messages  
POST Numeric Codes and Text Messages  
This section covers those POST errors that have numeric codes associated with them. The section  
also includes some text messages that may be encountered during POST.  
The computer will beep once after a POST text message is displayed on the screen.  
Numeric Codes and Text Messages  
Code/Message  
Probable Cause  
Recommended Action  
BIOS ROM checksum  
error–System halted  
The checksum of the BIOS  
code in the BIOS chip is  
incorrect, indicating that the  
BIOS code may have become  
corrupt.  
Verify the correct ROM.  
Flash the ROM is needed.  
If an expansion card was recently added,  
remove it and see if the problem remains.  
Clear CMOS.  
If the message disappears, there may be a  
problem with the expansion card.  
Replace the system board.  
CMOS battery failed  
The CMOS battery is no  
longer functional.  
Replace the RTC battery.  
CMOS checksum  
error—Defaults  
loaded  
Checksum of CMOS is  
incorrect, so the system loads  
the default equipment  
configuration. A checksum  
error may indicate that CMOS  
has become corrupt. A weak  
battery may have caused this  
error.  
Check the battery and replace, if necessary.  
CPU at nnnn  
Displays the running speed of  
the CPU.  
None.  
Press ESC to skip  
memory test  
The user may press ESC to skip the full memory  
test.  
HARD DISK INSTALL  
FAILURE  
Cannot find or initialize the  
hard drive controller or the  
drive.  
Make sure the controller is installed correctly in  
the BIOS. If no hard drives are installed, be  
sure the Hard Drive selection in Setup is set to  
NONE.  
Keyboard error or no  
keyboard present  
Cannot initialize the  
keyboard.  
Make sure the keyboard is attached correctly  
and no keys are pressed during POST. To  
purposely configure the system without a  
keyboard, set the error halt condition in Setup  
to HALT ON ALL, BUT KEYBOARD. The BIOS  
then ignores the missing keyboard during  
POST.  
Memory Test:  
This message displays during  
a full memory test, counting  
down the memory areas being  
tested.  
None.  
C–2  
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POST Error Messages  
Numeric Codes and Text Messages (Continued)  
Code/Message  
Probable Cause  
Recommended Action  
Memory test fail  
If POST detects an error  
during memory testing,  
additional information  
appears giving specifics about  
the type and location of the  
memory error.  
Shut down the system, reseat the DIMMs, and  
reboot the system. If the problem persists,  
replace the DIMMs.  
Override enabled–  
Defaults loaded  
If the system cannot boot using None.  
the current CMOS  
configuration, the BIOS can  
override the current  
configuration with a set of  
BIOS defaults designed for the  
most stable, minimal-  
performance system.  
Error: Non-System  
disk or disk error.  
Replace and press  
any key when ready  
The BIOS was unable to find a Shut down the system, ensure that the power  
suitable boot device. This may and data cables of all storage devices are  
mean an unitialized or corrupt plugged in properly, and reboot the system.  
ATA flash.  
Ensure all removable media have been  
removed.  
Warning: CPU fan  
has failed.  
CPU fan weak (RPM < 1000)  
or not turning.  
Ensure that the CPU fan power cable is  
connected. If the problem persists, replace the  
fan.  
Warning: System Fan  
has failed.  
System fan weak (RPM <  
1000) or not turning.  
Ensure that the System fan power cable is  
connected. If the problem persists, replace the  
fan.  
Memory is running at  
When two same size  
For optimal performance, shut down the system  
Single Channel Mode memories are put in slot 1 and and move the second DIMM from the XMM3 to  
3, this message will be  
displayed.  
the XMM2 socket.  
Service Reference Guide, dx5150  
361685-001  
C–3  
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POST Error Messages  
POST Diagnostic Front Panel LEDs and Audible Codes  
This section covers the front panel LED codes as well as the audible codes that may occur before  
or during POST that do not necessarily have an error code or text message associated with them.  
If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the  
computer and refer to the following table to determine the front panel LED codes.  
Recommended actions in the following table are listed in the order in which they should be  
performed.  
Diagnostic Front Panel LEDs and Audible Codes  
Possible  
Activity  
Beeps  
Cause  
Recommended Action  
Green Power LED  
On.  
None  
Computer on.  
None  
Green Power LED  
flashes every two  
seconds. The  
Power LED will  
continue flashing  
until the problem is  
resolved.  
None  
None  
Computer in  
Suspend to  
RAM mode  
(some models  
only) or  
None required. Press any key or move  
the mouse to wake the computer.  
normal  
Suspend  
mode.  
Red Power LED  
Processor  
thermal  
protection  
activated:  
A fan may be  
blocked or not  
turning.  
OR  
The  
heatsink/fan  
assembly is  
not properly  
attached to  
the processor.  
1. Ensure that the computer air vents  
are not blocked and the processor  
cooling fan is running. Leave a  
4-inch (10.2-cm) clearance at the  
back of the system unit and above  
the monitor to permit the required  
airflow.  
flashes two times,  
once every second,  
followed by a  
two-second pause.  
The Power LED will  
continue flashing  
until the problem is  
resolved. (Pertains  
to CPU fan only)  
2. Open hood, press power button,  
and see if the processor fan spins. If  
the processor fan is not spinning,  
make sure the fan's cable is plugged  
onto the system board header.  
Ensure the fan is fully/properly  
seated or installed.  
3. If fan is plugged in and seated  
properly, but is not spinning, then  
replace processor fan.  
4. Reseat processor heatsink and verify  
that the fan assembly is properly  
attached.  
C–4  
361685-001  
Service Reference Guide, dx5150  
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POST Error Messages  
Diagnostic Front Panel LEDs and Audible Codes (Continued)  
Possible  
Cause  
Activity  
Beeps  
Recommended Action  
Red Power LED  
None  
Processor not  
installed (not  
an indicator  
of bad  
1. Check to see that the processor is  
present.  
flashes three times,  
once every second,  
followed by a  
2. Reseat the processor.  
two-second pause.  
The Power LED will  
continue flashing  
until the problem is  
resolved.  
processor).  
Red Power LED  
None  
Power failure  
(power supply  
overloaded).  
1. Open the hood and ensure the  
4-wire power supply cable is seated  
into the connector on the system  
board.  
flashes four times,  
once every second,  
followed by a  
two-second pause.  
The Power LED will  
continue flashing  
until the problem is  
resolved.  
2. Check if a device is causing the  
problem by removing ALL attached  
devices (such as hard, diskette, or  
optical drives, and expansion  
cards). Power on the system. If the  
system enters the POST, then power  
off and replace one device at a time  
and repeat this procedure until  
failure occurs. Replace the device  
that is causing the failure. Continue  
adding devices one at a time to  
ensure all devices are functioning  
properly.  
3. Replace the power supply.  
4. Replace the system board.  
Red Power LED  
flashes five times,  
once every second,  
followed by a  
two-second pause,  
and the computer  
beeps five times.  
Beeps stop after  
five times but the  
Power LED will  
5
Pre-video  
memory error.  
1. Reseat DIMMs. Power on the  
system.  
2. Replace DIMMs one at a time to  
isolate the faulty module.  
3. Replace third-party memory with HP  
memory.  
4. Replace the system board.  
continue flashing  
until the problem is  
resolved.  
Service Reference Guide, dx5150  
361685-001  
C–5  
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POST Error Messages  
Diagnostic Front Panel LEDs and Audible Codes (Continued)  
Possible  
Cause  
Activity  
Beeps  
Recommended Action  
Red Power LED  
flashes six times,  
once every second,  
followed by a  
two-second pause,  
and the computer  
beeps six times.  
Beeps stop after  
five times but the  
Power LED will  
6
Pre-video  
graphics  
error.  
For systems with a graphics card:  
1. Reseat the graphics card. Power on  
the system.  
2. Replace the graphics card.  
3. Replace the system board.  
For systems with integrated graphics,  
replace the system board.  
continue flashing  
until the problem is  
resolved.  
Red Power LED  
7
System board  
failure (ROM  
detected  
failure prior to  
video).  
Replace the system board.  
flashes seven times,  
once every second,  
followed by a  
two-second pause,  
and the computer  
beeps seven times.  
Beeps stop after  
five times but the  
Power LED will  
continue flashing  
until the problem is  
resolved.  
Red Power LED  
8
Invalid ROM  
based on bad  
checksum.  
1. Reflash the ROM using a ROMPaq  
diskette. See the “ROM Flash”  
flashes eight times,  
once every second,  
followed by a  
section of the Desktop Management  
Guide on the Documentation CD.  
two-second pause,  
and the computer  
beeps eight times.  
Beeps stop after  
five times but the  
Power LED will  
2. Replace the system board.  
continue flashing  
until the problem is  
resolved.  
C–6  
361685-001  
Service Reference Guide, dx5150  
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POST Error Messages  
Diagnostic Front Panel LEDs and Audible Codes (Continued)  
Possible  
Cause  
Activity  
Beeps  
Recommended Action  
Red Power LED  
flashes nine times,  
once every second,  
followed by a  
two-second pause,  
and the computer  
beeps nine times.  
Beeps stop after  
five times but the  
Power LED will  
9 or  
System  
1. Check that the voltage selector,  
located on the rear of the power  
supply (some models), is set to the  
appropriate voltage. Proper voltage  
setting depends on your region.  
None,  
powers on but  
depending is unable to  
on the  
issue  
boot.  
2. Replace the system board.  
3. Replace the processor.  
continue flashing  
until the problem is  
resolved.  
Red Power LED  
flashes ten times,  
once every second,  
followed by a  
10  
Bad option  
card.  
1. Check each graphics card by  
removing the card (one at a time if  
multiple cards), then power on the  
system to see if fault goes away.  
two-second pause,  
and the computer  
beeps ten times.  
Beeps stop after  
five times but the  
Power LED will  
2. Once a bad card is identified,  
remove and replace the bad option  
card.  
3. Replace the system board.  
continue flashing  
until the problem is  
resolved.  
Service Reference Guide, dx5150  
361685-001  
C–7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
POST Error Messages  
Diagnostic Front Panel LEDs and Audible Codes (Continued)  
Possible  
Cause  
Activity  
Beeps  
Recommended Action  
System does not  
power on and LEDs  
are not flashing.  
None  
System unable Press and hold the power button for less  
to power on.  
than 4 seconds. If the hard drive LED  
turns green, then:  
1. Check that the voltage selector,  
located on the rear of the power  
supply, is set to the appropriate  
voltage. Proper voltage setting  
depends on your region.  
2. Remove the expansion cards one at  
a time until the 5V_aux light on the  
system board turns on.  
3. Replace the system board.  
OR  
Press and hold the power button for less  
than 4 seconds. If the hard drive LED  
does not turn on green then:  
1. Check that the unit is plugged into a  
working AC outlet.  
2. Open hood and check that the  
power button harness is properly  
connected to the system board.  
3. Check that both power supply  
cables are properly connected to  
the system board.  
4. Check to see if the 5V_aux light on  
the system board is turned on. If it is  
turned on, then replace the power  
button harness.  
5. If the 5V_aux light on the system  
board is not turned on, then replace  
the power supply.  
6. Replace the system board.  
C–8  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
D
Troubleshooting Without Diagnostics  
Preliminary Checklist  
This section describes some simple, preliminary tests and guidelines for troubleshooting the  
computer without using the diagnostics.  
Are the computer and monitor connected to a working electrical outlet?  
Is the voltage select switch is set to the appropriate voltage for your region (115V or 230V)?  
Is the computer turned on?  
Is the green power light illuminated?  
Is the monitor turned on?  
Is the green monitor light illuminated?  
Turn up the monitor brightness and contrast controls if the monitor is dim.  
If the system has multiple video sources (embedded, PCI, or PCI Express adapters) installed  
(embedded video on some models only) and a single monitor, the monitor must be plugged  
into the monitor connector on the source selected as the primary VGA adapter. During boot,  
the other monitor connectors are disabled and if the monitor is connected into these ports, the  
monitor will not function. You can select which source will be the default VGA source in  
Computer (F10) Setup.  
Press and hold any key. If the system beeps, then the keyboard is operating correctly.  
Check all cables for loose or incorrect connections.  
Reconfigure the computer after installing a non–Plug and Play expansion board or other  
option, such as a diskette drive.  
Are all of the necessary device drivers installed?  
Have all printer drivers been installed for each application?  
Remove all diskettes from the diskette drives before you turn on the system.  
Are all switches set correctly?  
Is the NIC Remote Wakeup cable (featured on some models) connected between the NIC and  
the riser/system board?  
Service Reference Guide, dx5150  
361685-001  
D–1  
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Troubleshooting Without Diagnostics  
Solving Minor Problems  
Solving Minor Problems  
Problem  
Cause  
Possible Solution  
Computer appears  
Software control of the  
power switch is not  
1. Press and hold the power button  
for at least four seconds until the  
computer turns off.  
locked up and will not  
turn off when the power functional.  
button is pressed.  
2. Disconnect electrical plug from  
outlet.  
Computer will not  
respond to USB  
keyboard or mouse.  
Computer is in  
standby mode.  
Press the power button to resume  
from standby mode.  
System has locked up.  
Restart computer.  
CAUTION: When attempting to resume from standby mode, do not hold down the power  
button for more than four seconds. Otherwise, the computer will shut down and you will lose  
your unsaved data.  
Ä
Computer date and  
time display is  
incorrect.  
RTC (real-time clock)  
battery may need to be  
replaced.  
1. Reset the date and time under  
Control Panel.  
2. Replace the RTC battery.  
Computer appears to  
pause periodically.  
Network driver is loaded  
and no network  
connection is established. Windows Device Manager to disable  
the network controller.  
Establish a network connection, or  
use Computer Setup or Microsoft  
Cursor will not move  
using the arrow keys on may be on.  
the keypad.  
The Num Lock key  
Press the Num Lock key. The Num  
Lock key can be disabled (or  
enabled) in Computer Setup.  
Devices connected to  
USB ports do not  
operate.  
The Front Panel USB Port  
Enable the Front Panel USB Port in  
Computer Setup. If the problem  
persists, contact an authorized  
service center.  
may be disabled in  
Computer Setup. This  
option controls the front  
USB port and the two USB  
ports on the back of the  
computer under the NIC  
connector.  
Cannot remove  
computer cover or  
access panel.  
Smart Cover Lock,  
featured on some  
computers, is locked.  
1. Unlock the Smart Cover Lock  
using Computer Setup.  
2. Use the Smart Cover FailSafe  
Key in case of forgotten  
password, power loss, or  
computer malfunction.  
D–2  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Troubleshooting Without Diagnostics  
Solving Minor Problems (Continued)  
Problem  
Cause  
Possible Solution  
Poor performance is  
experienced.  
Processor is hot.  
1. Ensure airflow to the computer is  
not blocked.  
2. Ensure the fans are connected  
and working properly (some fans  
only operate when needed).  
3. Ensure the processor heatsink is  
installed properly.  
Hard drive is full.  
Transfer data from the hard drive to  
create more space on the hard drive.  
Low on memory.  
Add more memory.  
Defragment hard drive.  
Restart the computer.  
Hard drive fragmented.  
Program previously  
accessed did not release  
reserved memory back to  
the system.  
Virus resident on the hard  
drive.  
Run virus protection program.  
Too many applications  
running.  
1. Close unnecessary applications  
to free up memory.  
2. Add more memory.  
Restart the computer.  
Cause unknown.  
Computer powered off  
automatically and the  
Power LED flashes Red  
two times, once every  
second, followed by a  
two second pause.  
Processor thermal  
1. Ensure computer air vents are not  
blocked and the cooling fan is  
running.  
2. Open hood, press power button,  
and see if the processor fan  
spins. If not spinning, make sure  
the fan's cable is plugged onto  
the system board header. Ensure  
the fan is fully/properly seated or  
installed.  
protection activated:  
A fan may be blocked or  
not turning.  
OR  
The heatsink is not  
properly attached to the  
processor.  
3. Replace the processor fan.  
4. Reseat processor heatsink and  
verify that the fan assembly is  
properly attached.  
Service Reference Guide, dx5150  
361685-001  
D–3  
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Troubleshooting Without Diagnostics  
Solving Minor Problems (Continued)  
Problem  
Cause  
Possible Solution  
System does not power  
on and the LEDs on the  
front of the computer  
are not flashing.  
System unable to power  
on.  
Press and hold the power button for  
less than 4 seconds. If the hard drive  
LED turns green, then:  
1. Check that the voltage selector is  
set to the appropriate voltage.  
2. Remove the expansion cards one  
at a time until the 5V_aux light on  
the system board turns on.  
3. Replace the system board.  
OR  
Press and hold the power button for  
less than 4 seconds. If the hard drive  
LED does not turn on green then:  
1. Check that the unit is plugged  
into a working AC outlet.  
2. Open hood and check that the  
power button harness is properly  
connected to the system board.  
3. Check that both power supply  
cables are properly connected to  
the system board.  
4. If the 5V_aux light on the system  
board is on, then replace the  
power button harness.  
5. If the 5V_aux light on the system  
board is off, then replace the  
power supply.  
6. Replace the system board.  
D–4  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Power Supply Problems  
Solving Power Supply Problems  
Problem  
Cause  
Solution  
Power supply shuts down  
intermittently.  
Voltage selector switch  
on rear of computer  
chassis not switched to  
correct line voltage.  
Select the proper AC voltage.  
Power supply fault.  
Replace the power supply.  
Computer powered off  
automatically and the  
Power LED flashes Red two  
times, once every second,  
followed by a two second  
pause. (Pertains to CPIU  
fan only)  
Processor thermal  
1. Ensure that the computer air  
vents are not blocked and the  
cooling fan is running.  
protection activated:  
A fan may be blocked  
or not turning.  
OR  
The heatsink/fan  
assembly is not  
properly attached to the  
processor.  
2. Open hood, press the power  
button, and see if the processor  
fan spins. If the processor fan is  
not spinning, make sure the  
fan's cable is plugged onto the  
system board header. Ensure  
the fan is fully/properly seated  
or installed.  
3. Replace the processor fan.  
4. Reseat processor heatsink and  
verify that the fan assembly is  
properly attached.  
Power LED flashes Red four  
times, once every second  
followed by a two-second  
pause.  
Power failure (power  
supply is overloaded).  
1. Check that the voltage selector,  
is set to the appropriate  
voltage.  
2. Open the hood and ensure the  
4- wire power supply cable is  
seated into the connector on the  
system board.  
3. Check if a device is causing the  
problem by removing ALL  
attached devices). Power on the  
system. If the system enters the  
POST, then power off and  
replace one device at a time  
and repeat this procedure until  
failure occurs. Replace the  
device causing the failure.  
Continue adding devices one at  
a time to ensure all devices are  
functioning properly.  
4. Replace the power supply.  
5. Replace the system board.  
Service Reference Guide, dx5150  
361685-001  
D–5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving Diskette Problems  
Solving Diskette Problems  
Problem  
Cause  
Solution  
Diskette drive light  
stays on.  
Diskette is damaged.  
In Microsoft Windows XP, right-click  
Start, click Explore, and select a  
drive. Select File > Properties >  
Tools. Under Error-checking,  
click Check Now.  
Diskette is incorrectly  
inserted.  
Remove diskette and reinsert.  
Drive cable is not  
properly connected.  
Reconnect power cable. Ensure that  
all four pins are connected.  
Drive not found.  
Cable is loose.  
Reseat diskette drive data and  
power cables.  
Removable drive is not  
seated properly.  
Reseat the drive.  
Diskette drive cannot write  
to a diskette.  
Diskette is not  
formatted.  
Format the diskette.  
Diskette is  
write-protected.  
Use another diskette or remove the  
write protection.  
Writing to the wrong  
drive.  
Check the drive letter in the path  
statement.  
Not enough space is  
left on the diskette.  
Use another diskette.  
Diskette write control is  
enabled.  
Use Computer Setup to check the  
storage security feature disabled  
settings.  
Diskette is damaged.  
Replace the damaged disk.  
Cannot format diskette.  
Invalid media reported.  
When formatting a disk in MS-DOS,  
you may need to specify diskette  
capacity. For example, to format a  
1.44-MB diskette, type the following  
command at the MS-DOS prompt:  
FORMAT A: /F:1440  
Disk may be write  
protected.  
Open the locking device on the  
diskette.  
A problem has occurred  
with a disk transaction.  
The directory structure  
is bad, or there is a  
problem with a file.  
In Windows XP, right-click Start,  
click Explore, and select a drive.  
Select File > Properties >  
Tools. Under Error-checking,  
click Check Now.  
D–6  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Diskette Problems (Continued)  
Problem  
Cause  
Solution  
Diskette drive cannot read  
a diskette.  
Diskette is not  
formatted.  
Format the diskette.  
You are using the  
wrong diskette type for  
the drive type.  
Check the type of drive that you  
are using and use the correct  
diskette type.  
You are reading the  
wrong drive.  
Check the drive letter in the path  
statement.  
Diskette is damaged.  
Replace the diskette with a  
new one.  
“Invalid system disk”  
message is displayed.  
A diskette that does not  
contain the system files  
needed to start the  
computer has been  
inserted in the drive.  
When drive activity stops, remove  
the diskette and press the  
Spacebar. The computer should  
start up.  
Diskette error has  
occurred.  
Restart the computer by pressing the  
power button.  
Cannot Boot to Diskette.  
Diskette is not bootable. Replace with a bootable diskette.  
Diskette boot has been  
disabled in Computer  
Setup.  
Run Computer Setup and enable  
diskette boot in Storage > Boot  
Order.  
Removable media boot  
has been disabled in  
Computer Setup.  
Run Computer Setup and enable  
Removable Media Boot in  
Storage > Storage Options.  
Network server mode is Enter Computer Setup and move the  
enabled in Computer  
Setup.  
network interface card to the last  
position in Advanced BIOS  
Features > Removable Device  
Priority.  
Service Reference Guide, dx5150  
361685-001  
D–7  
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Troubleshooting Without Diagnostics  
Solving Hard Drive Problems  
Solving Hard Drive Problems  
Problem  
Cause  
Solution  
Hard drive error occurs.  
Hard disk has bad  
sectors or has failed.  
1. In Windows XP, right-click  
Start, click Explore, and  
select a drive. Select File >  
Properties > Tools. Under  
Error-checking, click Check  
Now.  
2. Use a utility to locate and block  
usage of bad sectors. If  
necessary, reformat the hard  
disk.  
Disk transaction problem.  
Either the directory  
In Windows XP, right-click Start,  
structure is bad or there click Explore, and select a drive.  
is a problem with a file. Select File > Properties > Tools.  
Under Error-checking, click  
Check Now.  
Drive not found (identified). Loose cable.  
The system may not  
Check cable connections.  
1. Run Computer Setup.  
have automatically  
recognized a newly  
installed device.  
2. If the system still does not  
recognize the new device,  
check to see if the device is  
listed within Computer Setup. If  
it is listed, the probable cause is  
a driver problem. If it is not  
listed, the probable cause is a  
hardware problem.  
3. If this is a newly installed drive,  
enter Computer Setup and  
disable the Quick Power On  
Self Test in Advanced BIOS  
Features.  
Drive’s controller is  
disabled in Computer  
Setup.  
Enter Computer Setup and enable  
all the IDE and SATA controllers in  
Integrated Peripherals >  
South OnChip IDE Device and  
Integrated Peripherals >  
South OnChip PCI Device.  
Drive responds slowly  
immediately after  
power-up.  
Enter Computer Setup and disable  
the Quick Power On Self Test in  
Advanced BIOS Features.  
D–8  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Hard Drive Problems (Continued)  
Problem  
Cause  
Solution  
Nonsystem disk/NTLDR  
missing message.  
System is trying to start  
from a non bootable  
diskette.  
Remove the diskette from the  
diskette drive  
System is trying to start  
from a damaged hard  
drive.  
1. Insert a bootable diskette into  
the diskette drive and restart the  
computer.  
2. Check the hard drive format  
using fdisk:  
If NTFS formatting, use a third  
party reader to evaluate the  
drive.  
If FAT32 formatting, the hard  
drive cannot be accessed.  
Replace the MBR image.  
System files missing or  
not properly installed.  
1. Insert a bootable diskette into  
the diskette drive and restart the  
computer.  
2. Check the hard drive format  
using Fdisk:  
If NFTFS formatting, use a third  
party reader to evaluate the  
drive.  
If FAT32 formatting, the hard  
drive cannot be accessed.  
Replace the MBR image.  
Hard drive boot  
disabled in Computer  
Setup.  
Enter Computer Setup and enable  
the hard drive in Integrated  
Peripherals > South OnChip  
IDE Device > OnChip IDE  
Channel 0 or 1.  
- or -  
Enter Computer Setup and enable  
the hard drive in Integrated  
Peripherals > South OnChip  
PCI Device > Onboard Chip  
SATA.  
Bootable hard drive is  
If attempting to boot from a SATA  
not attached as first in a hard drive, ensure it is attached to  
multi-hard drive  
configuration.  
SATA 0.  
Service Reference Guide, dx5150  
361685-001  
D–9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Hard Drive Problems (Continued)  
Problem  
Cause  
Solution  
Computer will not start.  
Hard drive is damaged. Observe the beeps and LED lights  
on the front of the computer. See  
Computer seems to be  
locked up.  
Program in use has  
stopped responding to  
commands.  
1. Attempt the normal Windows  
“Shut Down” procedure.  
2. Press the power button for  
four or more seconds to turn off  
the power.  
3. Restart the computer using the  
power button.  
D–10  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Display Problems  
Solving Display Problems  
Problem  
Cause  
Solution  
Blank screen (no video).  
The cable connections  
are not correct.  
Check the cable connections from  
the monitor to the computer and to  
the electrical outlet.  
Screen blanking utility  
installed or energy  
saver features enabled.  
Press any key or click the mouse  
button and, if set, type your  
password.  
System ROM is bad;  
system is running in  
FailSafe Boot Block  
mode (indicated by  
eight beeps).  
Reflash the ROM using a ROMPaq  
diskette.  
Fixed-sync monitor will  
not sync at the  
resolution chosen.  
Ensure that the monitor can accept  
the same horizontal scan rate as the  
resolution chosen.  
Computer is in  
standby mode.  
Press the power button to resume  
from standby mode.  
CAUTION: When attempting to resume from standby mode, do not hold down the  
power button for more than four seconds. Otherwise, the computer will shut down  
and you will lose your unsaved data.  
Ä
Monitor cable plugged  
into the wrong  
connector.  
If the computer system has both  
an integrated graphics connector  
and an add-in graphics card  
connector, plug the monitor cable  
into the graphics card connector on  
the back of the computer.  
Monitor settings in the  
computer are not  
compatible with the  
monitor.  
1. Restart the computer and press  
F8 during startup when you see  
“Press F8” in the bottom right  
corner of the screen.  
2. Using the keyboard arrow keys,  
select Enable VGA Mode  
and press Enter.  
3. In Windows Control Panel,  
double-click the Display icon  
and select the Settings tab.  
4. Use the sliding control to reset  
the resolution.  
Service Reference Guide, dx5150  
361685-001  
D–11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Troubleshooting Without Diagnostics  
Solving Display Problems (Continued)  
Problem  
Cause  
Solution  
Blank screen and the  
Pre-video memory error.  
1. Reseat DIMMs. Power on the  
system.  
power LED flashes Red five  
times, once every second,  
followed by a two-second  
pause, and the computer  
beeps five times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
2. Replace DIMMs one at a time to  
isolate the faulty module.  
3. Replace third-party memory  
with HP memory.  
4. Replace the system board.  
Power LED flashes Red six  
times, once every second,  
followed by a two second  
pause, and the computer  
beeps six times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
Pre-video graphics  
error.  
For systems with a graphics card:  
1. Reseat the graphics card.  
2. Replace the graphics card.  
3. Replace the system board.  
For systems with integrated  
graphics, replace the system board.  
Blank screen and the  
power LED flashes Red  
seven times, once every  
second, followed by a  
two-second pause, and the  
computer beeps seven  
times. The beeps will  
repeat five times, but the  
Power LED will continue  
flashing until the problem is  
resolved.  
System board failure  
(ROM detected failure  
prior to video).  
Replace the system board.  
Monitor does not function  
properly when used with  
energy saver features.  
Monitor without energy  
saver capabilities is  
being used with energy  
saver features enabled.  
Disable monitor energy saver  
feature.  
Dim characters.  
The brightness and  
contrast controls are not contrast controls.  
set properly.  
Adjust the monitor brightness and  
Cables are not properly Check that the graphics cable is  
connected.  
securely connected to the graphics  
card and the monitor.  
Blurry video or requested  
resolution cannot be set.  
If the graphics  
Install the video drivers included in  
the upgrade kit.  
controller was  
upgraded, the correct  
video drivers may not  
be loaded.  
D–12  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Display Problems (Continued)  
Problem  
Cause  
Solution  
Blurry video or requested  
resolution cannot be set  
(continued)  
Monitor is not capable  
of displaying requested  
resolution.  
Change requested resolution.  
The picture is broken up,  
rolls, jitters, or flashes.  
The monitor  
1. Be sure the monitor cable is  
securely connected to the  
computer.  
connections may be  
incomplete or the  
monitor may be  
incorrectly adjusted.  
2. In a two-monitor system or if  
another monitor is in close  
proximity, be sure the monitors  
are not interfering with each  
other’s electromagnetic field by  
moving them apart.  
3. Fluorescent lights or fans may  
be too close to the monitor.  
Monitor needs to be  
degaussed.  
Degauss the monitor.  
Vibrating or rattling noise  
coming from inside a CRT  
monitor when powered on.  
Monitor degaussing  
coil has been activated. degaussing coil to be activated  
when the monitor is powered on.  
None. It is normal for the  
Clicking noise coming from Electronic relays have  
None. It is normal for some  
inside a CRT monitor.  
been activated inside  
the monitor.  
monitors to make a clicking noise  
when turned on and off, when  
going in and out of standby mode,  
and when changing resolutions.  
High pitched noise coming  
from inside a flat panel  
monitor.  
Brightness and/or  
contrast settings are too settings.  
high.  
Lower brightness and/or contrast  
Fuzzy focus; streaking,  
ghosting, or shadowing  
effects; horizontal scrolling  
lines; faint vertical bars; or  
Flat panel monitor’s  
internal digital  
conversion circuits may  
be unable to correctly  
1. Select the monitor’s  
Auto-Adjustment option in the  
monitor’s on-screen display  
menu.  
unable to center the picture interpret the output  
2. Manually synchronize the Clock  
and Clock Phase on-screen  
on the screen.  
synchronization of the  
graphics card.  
(flat panel monitors using  
an analog VGA input  
connection only)  
display functions. Download  
SoftPaq SP20930 or SP22333,  
depending on the monitor, to  
assist with the synchronization.  
Certain typed symbols do  
not appear correct.  
The font you are using  
does not support that  
particular symbol.  
Use the Character Map to locate the  
and select the appropriate symbol.  
Click Start > All Programs >  
Accessories > System Tools >  
Character Map. You can copy  
the symbol from the Character Map  
into a document.  
Service Reference Guide, dx5150  
361685-001  
D–13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Audio Problems  
Solving Audio Problems  
Problem  
Cause  
Solution  
Sound cuts in and out.  
Processor resources are  
being used by other  
open applications.  
Shut down all open  
processor-intensive applications.  
Direct sound latency,  
common in many media  
player applications.  
In Windows XP:  
1. From the Control Panel,  
select Sounds and Audio  
Devices.  
2. On the Audio tab, select a  
device from the Sound  
Playback list.  
3. Click the Advanced button  
and select the Performance  
tab.  
4. Set the Hardware  
acceleration slider to None  
and the Sample rate  
conversion quality slider to  
Good and retest the audio.  
Set the Hardware acceleration  
slider to Full and the Sample rate  
conversion quality slider to  
Best and retest the audio.  
Sound does not come  
out of the speaker or  
headphones.  
Software volume control Double-click the Speaker icon on  
is turned down.  
the taskbar and use the volume  
slider to adjust the volume.  
Audio is hidden in  
Computer Setup.  
Enable the audio in Computer  
Setup: Integrated Peripherals  
> South OnChip PCI Device.  
The external speakers  
are not turned on.  
Turn on the external speakers.  
External speakers  
plugged into the wrong  
audio jack.  
See the sound card documentation  
for proper speaker connection.  
Audio cable not  
connected.  
Connect audio cable between CD  
or DVD-ROM drive and the system  
board.  
D–14  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Audio Problems (Continued)  
Problem  
Cause  
Solution  
Sound does not come  
out of the speaker or  
headphones. (Continued)  
Digital CD audio is not  
enabled.  
Enable digital CD audio:  
1. From the Control Panel,  
select System.  
2. On the Hardware tab, click  
the Device Manager button.  
3. Right-click on the CD/DVD  
device and select Properties.  
4. On the Properties tab, make  
sure “Enable digital CD  
audio for this CD-ROM  
device” is checked.  
Headphones or devices Turn on and use headphones or  
connected to the  
line-out connector mute  
the internal speaker.  
external speakers, if connected, or  
disconnect headphones or external  
speakers.  
Volume is muted.  
1. From the Control Panel  
program, click Sound,  
Speech and Audio  
Devices, then click Sounds  
and Audio Devices.  
2. Click the Mute check box to  
remove the check mark from  
the box.  
Computer is in  
standby mode.  
Press the power button to resume  
from standby mode.  
CAUTION: When attempting to resume from standby mode, do not hold down the  
power button for more than four seconds. Otherwise, the computer will shut down  
and you will lose your unsaved data.  
Ä
Noise or no sound comes  
out of the speakers or  
headphones.  
Computer may not be  
detecting the correct  
speaker/headphone  
type or output or  
analog-to-digital  
auto-sense is not  
engaged.  
1. The audio output jack supports  
both digital and analog output  
functions. When using digital  
speakers, switch the PC’s output  
jack to digital mode. Go to the  
Volume Control Panel, select  
the Advanced button, and  
select the Enable Digital Audio  
check box. When using  
conventional analog speakers,  
ensure this check box is not  
selected.  
2. If the headphones have a mono  
jack, use the multimedia device  
properties to switch the system  
to analog out.  
Service Reference Guide, dx5150  
361685-001  
D–15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Audio Problems (Continued)  
Problem Cause  
Solution  
If you set digital as the Output Mode, the internal speaker and external analog  
speakers will no longer output audio until you switch back to an auto-sense or  
analog mode.  
If you set analog as the Output Mode, external digital speakers will not function  
until you change the output mode back to an auto-sense or digital mode.  
Computer appears to be  
locked up while recording  
audio.  
The hard disk may be  
full.  
1. Before recording, make sure  
there is enough free space on  
the hard disk.  
2. Try recording the audio file in a  
compressed format.  
Solving Printer Problems  
Solving Printer Problems  
Problem  
Cause  
Solution  
Printer will not print.  
Printer is not turned on  
and online.  
Turn the printer on and make sure it  
is online.  
The correct printer  
driver for the  
1. Install the correct printer driver  
for the application.  
application are not  
installed.  
2. Try printing using the  
MS-DOS command:  
DIR C:\ > [printer port]  
where [printer port] is the  
address of the printer being  
used. If the printer works,  
reload the printer driver.  
If you are on a network, Make the proper network  
you may not have  
made the connection  
to the printer.  
connections to the printer.  
Printer may have failed. Run printer self-test.  
Printer will not turn on.  
The cables may not be  
connected properly.  
Reconnect all cables.  
Printer prints garbled  
information.  
The correct printer  
driver is not installed.  
Install the correct printer driver for  
the application.  
The cables may not be  
connected properly.  
Reconnect all cables.  
Printer memory may be  
overloaded.  
Reset the printer by turning it off for  
one minute, then turn it back on.  
Printer is offline.  
The printer may be out  
of paper.  
1. Check the paper tray and refill  
it if it is empty.  
2. Select online.  
D–16  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Keyboard and Mouse Problems  
Solving Keyboard Problems  
Problem  
Cause  
Solution  
Keyboard commands and  
typing are not recognized  
by the computer.  
Keyboard connector  
is not properly  
connected.  
1. Turn off the computer.  
2. Reconnect the keyboard to the  
back of the computer and  
restart the computer.  
Program in use has  
stopped responding  
to commands.  
Shut down the computer using  
the mouse and then restart the  
computer.  
Keyboard needs  
repairs.  
Replace the keyboard.  
Computer is in  
standby mode.  
Press the power button to resume  
from standby mode.  
CAUTION: When attempting to resume from standby mode, do not hold down the  
power button for more than four seconds. Otherwise, the computer will shut down  
and you will lose your unsaved data.  
Ä
Cursor will not move using  
the arrow keys on the  
keypad.  
The Num Lock key  
may be on.  
Press the Num Lock key. The  
Num Lock light should not be on if  
you want to use the arrow keys. The  
Num Lock key can be disabled  
(or enabled) in Computer Setup.  
Mouse does not respond to Mouse connector is  
1. Shut down the computer using  
the keyboard.  
movement or is too slow.  
not properly plugged  
into the back of the  
computer.  
2. Plug the mouse connector into  
the back of the computer (or the  
keyboard) and restart the  
computer.  
Program in use has  
stopped responding  
to commands.  
Shut down the computer using the  
keyboard and then restart the  
computer.  
Mouse may need  
cleaning.  
Remove the roller ball cover on the  
mouse and clean the internal  
components.  
Mouse needs repairs.  
Replace the mouse.  
Computer is in  
standby mode.  
Press the power button to resume  
from standby mode.  
CAUTION: When attempting to resume from standby mode, do not hold down the  
power button for more than four seconds. Otherwise, the computer will shut down  
and you will lose your data.  
Ä
Mouse will only move  
vertically or horizontally, or dirty.  
movement is jerky.  
Mouse roller ball is  
Remove roller ball cover from the  
bottom of the mouse and clean it.  
Service Reference Guide, dx5150  
361685-001  
D–17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving Hardware Installation Problems  
You may need to reconfigure the computer when you add or remove hardware, such as an  
additional diskette drive. If you install a plug and play device, Windows XP automatically  
recognize the device and configure the computer. If you install a non–plug and play device, you  
must reconfigure the computer after completing installation of the new hardware. In Windows  
XP, use the Add Hardware Wizard and follow the instructions that appear on the screen.  
Solving Hardware Installation Problems  
Problem  
Cause  
Solution  
A new device is not  
recognized as part of  
the system.  
Device is not seated or  
connected properly.  
Ensure that the device is properly  
and securely connected and that  
pins in the connector are not  
bent down.  
Cable(s) of new  
Ensure that all cables are properly  
and securely connected and that  
pins in the cable or connector are  
not bent down.  
external device are  
loose or power cables  
are unplugged.  
Power switch of new  
external device is not  
turned on.  
Turn off the computer, turn on the  
external device, then turn on the  
computer to integrate the device  
with the computer system.  
When the system  
Reboot the computer and follow the  
advised you of changes instructions for accepting the  
to the configuration,  
you did not accept  
them.  
changes.  
A plug and play board  
may not automatically  
configure when  
added if the default  
configuration conflicts  
with other devices.  
Use Windows XP Device Manager  
to deselect the automatic settings for  
the board and choose a basic  
configuration that does not cause a  
resource conflict. You can also use  
Computer Setup to reconfigure or  
disable devices to resolve the  
resource conflict.  
Computer will not start.  
Wrong memory  
1. Review the documentation that  
came with the system to  
modules were used in  
the upgrade or memory  
modules were installed  
in the wrong location.  
determine if you are using the  
correct memory modules and to  
verify the proper installation.  
2. Observe the beeps and LED  
lights on the front of the  
computer. See Appendix C,  
determine possible causes.  
D–18  
361685-001  
Service Reference Guide, dx5150  
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Troubleshooting Without Diagnostics  
Solving Hardware Installation Problems (Continued)  
Problem  
Cause  
Solution  
Power LED flashes Red five  
times, once every second,  
followed by a two second  
pause, and the computer  
beeps five times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
Memory is installed  
incorrectly or is bad.  
1. Reseat DIMMs.  
2. Replace DIMMs one at a time to  
isolate the faulty module.  
3. Replace third-party memory  
with HP memory.  
4. Replace the system board.  
Power LED flashes Red six  
times, once every second,  
followed by a two second  
pause, and the computer  
beeps six times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
Video card is not  
seated properly or is  
bad, or system board is  
bad.  
For systems with a graphics card:  
1. Reseat the graphics card.  
Power on the system.  
2. Replace the graphics card.  
3. Replace the system board.  
For systems with integrated  
graphics, replace the system board.  
Power LED flashes Red ten  
times, once every second,  
followed by a two-second  
pause, and the computer  
beeps ten times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
Bad option card.  
1. Check each option card by  
removing the cards one at time  
(if multiple cards), then power  
on the system to see if fault goes  
away.  
2. Once bad card is identified,  
remove and replace bad option  
card.  
3. Replace the system board.  
Service Reference Guide, dx5150  
361685-001  
D–19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Network Problems  
These guidelines do not discuss the process of debugging the network cabling.  
Solving Network Problems  
Problem  
Cause  
Solution  
Wake-on-LAN feature is  
not functioning.  
Wake-on-LAN is not  
enabled.  
Use the Network control  
application to enable  
Wake-on-LAN.  
Network driver does  
not detect network  
controller.  
Network controller is  
disabled.  
Run Computer Setup and enable  
network controller.  
Incorrect network driver.  
Check the network controller  
documentation for the correct driver  
or obtain the latest driver from the  
manufacturer’s Web site.  
Network status link light  
does not turn on or it  
never flashes.  
No active network is  
detected.  
Check cabling and network  
equipment for proper connection.  
Network controller is not  
set up properly.  
Use the Network control  
application to verify that the device  
is working properly.  
The network status  
light should flash  
when there is  
network activity.  
Network driver is not  
properly loaded.  
Reinstall network drivers.  
System cannot autosense  
the network.  
Disable auto-sensing capabilities  
and force the system into the  
correct operating mode.  
Diagnostics reports a  
failure.  
The cable is not securely  
connected.  
Ensure that both ends of the data  
cable are securely connected.  
The cable is attached to  
the incorrect connector.  
Ensure that the cable is attached to  
the correct connector.  
There is a problem with  
the cable or a device at  
Ensure that the cable and device at  
the other end are operating  
the other end of the cable. correctly.  
Network controller  
interrupt is shared with  
an expansion board.  
Enter Computer Setup and change  
the resource settings for the board  
in PnP/PCI Configurations >  
IRQ Resources.  
The network controller  
is defective.  
Replace the NIC.  
Diagnostics passes, but  
the computer does not  
communicate with the  
network.  
Network drivers are  
not loaded, or driver  
parameters do not match  
current configuration.  
1. Make sure the network drivers  
are loaded and that the driver  
parameters match the  
configuration of the network  
controller.  
2. Make sure the correct network  
client and protocol is installed.  
D–20  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Troubleshooting Without Diagnostics  
Solving Network Problems (Continued)  
Problem  
Cause  
Solution  
Diagnostics passes, but  
the computer does not  
communicate with the  
network. (continued)  
The network controller  
is not configured for this  
computer.  
Select the Network icon in the  
Control Panel and configure the  
network controller.  
Network controller  
Network controller  
interrupt is shared with an  
expansion board.  
Enter Computer Setup and change  
the resource settings for the board  
in PnP/PCI Configurations >  
IRQ Resources.  
stopped working when  
an expansion board was  
added to the computer.  
The network controller  
requires drivers.  
Verify that the drivers were not  
accidentally deleted when the  
drivers for a new expansion board  
were installed.  
The expansion board  
Enter Computer Setup and change  
installed is a network card the resource settings for the board  
(NIC) and conflicts with  
the embedded NIC.  
in PnP/PCI Configurations >  
IRQ Resources.  
Network controller stops  
working without  
apparent cause.  
The files containing the  
network drivers are  
corrupted.  
Reinstall the network drivers, using  
the Restore Plus! CD.  
The cable is not securely  
connected.  
Ensure that both ends of the cable  
are securely attached to the correct  
devices.  
The network controller is  
defective.  
Replace the NIC.  
New network card will  
not boot.  
New network card may  
be defective or may not  
meet industry-standard  
specifications.  
Install a working, industry-standard  
NIC, or change the boot sequence  
to boot from another source.  
Cannot connect to  
network server when  
attempting Remote  
System Installation.  
The network controller is  
not configured properly.  
Verify Network Connectivity, that a  
DHCP Server is present, and that  
the Remote System Installation  
Server contains the NIC drivers for  
your NIC.  
System setup utility  
reports unprogrammed  
EEPROM.  
Unprogrammed EEPROM.  
Flash the ROM.  
Service Reference Guide, dx5150  
361685-001  
D–21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving Memory Problems  
CAUTION: For those systems that support ECC memory, HP does not support mixing ECC and non-ECC  
memory. Otherwise, the system will not boot the operating system.  
Ä
Solving Memory Problems  
Problem  
Cause  
Solution  
System will not boot or  
does not function properly  
after installing additional  
memory modules.  
Memory module is not  
the correct type or  
speed or the new  
memory module is not  
seated properly.  
Replace module with the correct  
industry-standard device for the  
computer.  
On some models, ECC and  
non-ECC memory modules cannot  
be mixed.  
Out of memory error.  
Memory configuration  
may not be set up  
correctly.  
Use the Device Manager to check  
memory configuration.  
You have run out of  
memory to run the  
application.  
Check the application  
documentation to determine the  
memory requirements.  
Memory count during  
POST is wrong.  
The memory modules  
may not be installed  
correctly.  
Check that the memory modules  
have been installed correctly and  
that proper modules are used.  
Integrated graphics  
may use system  
memory.  
No action required.  
Insufficient memory error  
during operation.  
Too many Terminate  
and Stay Resident  
programs (TSRs) are  
installed.  
Delete any TSRs that you do  
not need.  
You have run out of  
memory for the  
application.  
Check the memory requirements for  
the application or add more  
memory to the computer.  
Power LED flashes Red five  
times, once every second,  
followed by a two second  
pause, and the computer  
beeps five times. The beeps  
will repeat five times, but  
the Power LED will continue  
flashing until the problem is  
resolved.  
Memory is installed  
incorrectly or is bad.  
1. Reseat DIMMs.  
2. Replace DIMMs one at a time to  
isolate the faulty module.  
3. Replace third-party memory  
with HP memory.  
4. Replace the system board.  
D–22  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving Processor Problems  
Solving Processor Problems  
Problem  
Cause  
Solution  
Poor performance is  
experienced.  
Processor is hot.  
1. Make sure the airflow to the  
computer is not blocked. Leave  
a 10.2-cm (4-inch) clearance at  
the back of the system unit and  
above the monitor to permit the  
required airflow.  
2. Make sure the fans are  
connected and working  
properly (some fans only  
operate when needed).  
3. Make sure the processor  
heatsink is installed properly.  
Power LED flashes Red  
three times, once every  
second, followed by a  
two-second pause. The  
Power LED will continue  
flashing until the problem is  
resolved.  
Processor is not seated  
properly or not  
installed. (This is not an  
indicator of a bad  
processor)  
1. Check to see that the processor  
is present.  
2. Reseat the processor.  
Service Reference Guide, dx5150  
361685-001  
D–23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Troubleshooting Without Diagnostics  
Solving CD-ROM and DVD Problems  
Solving CD-ROM and DVD Problems  
Problem  
Cause  
Solution  
System will not boot from  
CD-ROM or DVD drive.  
Removable Media Boot  
is disabled in the  
Computer Setup utility.  
Enter Computer Setup and enable  
CD-ROM or DVD drive boot in  
Integrated Peripherals >  
South OnChip IDE Device >  
OnChip IDE Channel 0 or 1.  
Network Server Mode  
is enabled in Computer  
Setup.  
Enter Computer Setup and move the  
network interface card to the last  
position in Advanced BIOS  
Features > Removable Device  
Priority.  
Non-bootable CD in  
drive.  
Try a bootable CD in the drive.  
Boot order not correct.  
Enter Computer Setup and change  
boot sequence in Advanced  
BIOS Features and Advanced  
BIOS Features > Removable  
Device Priority.  
CD-ROM or DVD devices  
are not detected or driver  
is not loaded.  
Drive is not connected  
properly or not properly  
configured.  
1. Reconnect power and data  
cables to the drive.  
2. Install correct device driver.  
Movie will not play in the  
DVD drive.  
Movie may be  
regionalized for a  
different country.  
See the documentation that came  
with the DVD drive.  
Decoder software is not Install decoder software.  
installed.  
Damaged media.  
Replace media.  
Movie rating locked out Use DVD software to remove  
by parental lock.  
parental lock.  
Cannot eject compact disc  
(tray-load unit).  
Disc not properly  
seated in the drive.  
1. Turn off the computer and insert  
a thin metal rod into the  
emergency eject hole and push  
firmly.  
2. Slowly pull the tray out from the  
drive until the tray is fully  
extended, then remove the disc.  
D–24  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving CD-ROM and DVD Problems (Continued)  
Problem  
Cause  
Solution  
CD-ROM, CD-RW,  
Media has been  
Re-insert the media with the label  
facing up.  
DVD-ROM, or DVD-R/RW  
drive cannot read a disc or  
takes too long to start.  
inserted upside down.  
The DVD-ROM drive  
takes longer to start  
because it has to  
determine the type of  
media played, such as  
audio or video.  
Wait at least 30 seconds to let the  
DVD-ROM drive determine the type  
of media being played. If the disc  
still does not start, read the other  
solutions listed for this topic.  
CD or DVD disc is dirty. Clean CD or DVD with a CD  
cleaning kit.  
Windows does not  
detect the CD-ROM or  
DVD-ROM drive.  
1. Use Device Manager to remove  
or uninstall the device in  
question.  
2. Restart the computer and let  
Windows detect the device.  
Recording audio CDs is  
difficult or impossible.  
Wrong or poor quality  
media type.  
1. Try using a slower recording  
speed.  
2. Verify that you are using the  
correct media for the drive.  
3. Try a different brand of media.  
Quality varies widely between  
manufacturers.  
Solving Drive Key Problems  
Solving Drive Key Problems  
Problem  
Cause  
Solution  
Drive key is not seen as a  
drive letter in Windows XP.  
The drive letter after the Change the default drive letter for  
last physical drive is not the Drive key in Windows XP.  
available.  
The computer boots to  
DOS after making a  
bootable Drive key.  
Drive key is bootable.  
Install the Drive key after the  
operating system boots.  
Service Reference Guide, dx5150  
361685-001  
D–25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving Internet Access Problems  
Solving Internet Access Problems  
Problem  
Cause  
Solution  
Unable to connect to the  
Internet.  
Internet Service  
Provider (ISP) account is ISP for assistance.  
not set up properly.  
Verify Internet settings or contact the  
Modem is not set up  
properly.  
Reconnect the modem. Verify the  
connections are correct using the  
quick setup documentation.  
Web browser is not set  
up properly.  
Verify that the Web browser is  
installed and set up to work with  
your ISP.  
Cable/ DSL modem is  
not plugged in.  
Plug in cable/DSL modem. You  
should see a “power” LED light on  
the front of the cable/DSL modem.  
Cable/DSL service is  
not available or has  
been interrupted due to  
bad weather.  
Try connecting to the Internet at a  
later time or contact your ISP. (If the  
cable/DSL service is connected, the  
“cable” LED light on the front of the  
cable/DSL modem will be on.)  
The CAT5 UTP cable is  
disconnected.  
Connect the CAT5 UTP cable  
between the cable modem and the  
computers’s RJ-45 connector. (If the  
connection is good, the “PC” LED  
light on the front of the cable/DSL  
modem will be on.)  
IP address is not  
configured properly.  
Contact the ISP for the correct IP  
address.  
Cookies are corrupted.  
In Windows XP  
1. Select Start > Control  
Panel.  
2. Double-click Internet  
Options.  
3. On the General tab, click the  
Delete Cookies button.  
Cannot automatically  
launch Internet programs.  
You must log on to the  
ISP before some  
programs will start.  
Log on to the ISP and launch the  
desired program.  
D–26  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting Without Diagnostics  
Solving Internet Access Problems (Continued)  
Problem  
Cause  
Solution  
Internet takes too long to  
download Web sites.  
Modem is not set up  
properly.  
Verify that the correct modem speed  
and COM port are selected.  
For Windows XP:  
1. Select Start > Control  
Panel.  
2. Double-click System.  
3. Click the Hardware tab.  
4. In the Device Manager area,  
click the Device Manager  
button.  
5. Double-click Ports (COM &  
LPT).  
6. Right-click the COM port your  
modem uses, then click  
Properties.  
7. Under Device status, verify  
that the modem is working  
properly.  
8. Under Device usage, verify  
the modem is enabled.  
9. If there are further problems,  
click the Troubleshoot button  
and follow the on-screen  
instructions.  
Solving Software Problems  
Most software problems occur as a result of the following:  
The application was not installed or configured correctly.  
There is insufficient memory available to run the application.  
There is a conflict between applications.  
Make sure that all the needed device drivers have been installed.  
If you have installed an operating system other than the factory-installed operating system,  
check to be sure it is supported on the system.  
Where available, run the Configuration Record utility to determine if any changes have been  
made to the software which may be causing a problem.  
If you encounter software problems, see the applicable solutions listed in the following table.  
Service Reference Guide, dx5150  
361685-001  
D–27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Troubleshooting Without Diagnostics  
Solving Software Problems  
Problem  
Cause  
Solution  
Computer will not continue  
and no HP logo screen has occurred.  
appeared.  
POST error has  
Observe the beeps and LED lights  
on the front of the computer.  
Messages” to determine possible  
causes.  
See the Restore Kit or the  
Worldwide Limited Warranty for  
terms and conditions.  
Computer will not continue  
after HP logo screen has  
appeared.  
System files may be  
damaged.  
Use recovery diskette to scan hard  
drive for errors.  
“Illegal Operation has  
Occurred” error message  
is displayed.  
Software being used is  
not Microsoft-certified  
for your version of  
Windows.  
Verify that the software is certified  
by Microsoft for your version of  
Windows (see program packaging  
for this information).  
Configuration files are  
corrupt.  
If possible, save all data, close all  
programs, and restart the computer.  
D–28  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
E
Memory  
AMD-Based Systems  
Computers equipped with AMD-based processors come with Double Data Rate-Synchronous  
Dynamic Random Access Memory (DDR-SDRAM) Dual Inline Memory Modules (DIMMs).  
DIMMs  
The memory sockets on the system board can be populated with up to four industry-standard  
DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve  
the maximum memory support, you can populate the system board with up to 8GB (1-Gbit  
Technology) of memory configured in a high-performing dual channel mode.  
The memory available may be limited by the operating system.  
DDR-SDRAM DIMMs  
For proper system operation, if the computer supports DDR-SDRAM DIMMs,  
the DIMMs must be:  
industry-standard 184-pin  
unbuffered PC3200 400 MHz-compliant  
2.5 volt DDR-SDRAM DIMMs.  
The DDR-SDRAM DIMMs must also:  
support CAS latency 3 (CL = 3)  
contain the mandatory JEDEC SPD information  
In addition, the computer supports:  
128Mbit, 256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies  
single-sided and double-sided DIMMS  
DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM  
are not supported  
The system will not start if you install unsupported DIMMs.  
Service Reference Guide, dx5150  
361685-001  
E–1  
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Memory  
DIMM Sockets  
The system will automatically operate in single channel mode or a higher-performing dual  
channel mode, depending on how the DIMMs are installed.  
In single channel mode, always populate the XMM1 socket first. If you add a second DIMM  
of a different memory size than the first, install it in XMM3. Otherwise, the system will not  
operate.  
In single channel mode, the maximum operational speed is determined by the slowest DIMM in  
the system. If the system is populated with a DIMM that is 266 MHz and a second DIMM that is  
333 MHz, the system will run at the slower of the two speeds.  
In dual channel mode, all DIMMs must be identically matched. If you are populating all four  
DIMM sockets, you must either use identical DIMMs in all sockets or use identical DIMM  
pairs in each pair of sockets, XMM1 and XMM2 black sockets and XMM3 and XMM4 blue  
sockets. Otherwise, the system will not operate.  
There are four DIMM sockets on the system board, with two sockets per channel. The sockets are  
labeled XMM1, XMM2, XMM3, and XMM4. Sockets XMM1 and XMM3 operate in memory  
channel A. Sockets XMM2 and XMM4 operate in memory channel B.  
The system board shown below may be different from the one in your computer.  
Item  
1
Description  
Socket Color  
Black  
DIMM socket XMM1, Channel A  
DIMM socket XMM2, Channel B  
DIMM socket XMM3, Channel A  
DIMM socket XMM4, Channel B  
2
Black  
3
Blue  
4
Blue  
E–2  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Index  
4-pin power pin assignments A–7  
24-pin MicroFit power pin assignments A–7  
24-pin power pin assignments A–6  
3.5" drive bezel, MT removal and replacement 6–6  
5.25" drive bezel, MT removal and replacement  
categories, Diagnostics for Windows 2–10  
cautions  
AC power 5–1  
adding devices 1–1  
batteries 5–9  
cables 5–8  
cooling fan 5–7  
keyboard cleaning 5–6  
keyboard keys 5–6  
A
access panel, MT removal and replacement 6–3  
access to computer, controlling 3–9  
asset tracking 3–9  
operating system installation 1–1  
protecting ROM 3–4  
changing operating systems, important information  
ATA/ATAPI (IDE) drive cable pin assignments  
audible codes C–4  
chassis fan  
B
MT removal and replacement 6–20  
SFF removal and replacement 7–24  
chassis types, illustrated 5–1  
cleaning  
battery  
disposal 5–9  
MT removal and replacement 6–29  
real-time clock D–2  
SFF removal and replacement 7–25  
beep codes C–4  
computer 5–6  
keyboard 5–6  
monitor 5–6  
blank screen D–11  
mouse 5–7  
bootable disk, important information 3–15  
cloning tools, software 3–1  
CMT  
cable management 6–7  
computer  
C
cable  
MT removal and replacement 6–14  
proper handling 5–8  
SFF removal and replacement 7–16  
cable layout, PATA 4–4  
cable lock  
cable lock provision 3–15  
cable management  
cleaning 5–6  
computer pauses D–2  
Configuration Record Utility 2–13  
configuring power button 3–8  
connector pin assignments A–1 to A–7  
controlling access to computer 3–9  
country-specific power cord set requirements B–2  
customizing software 3–1  
D
cable pinouts  
date and time display D–2  
deployment tools, software 3–1  
device drivers  
PATA data 4–3  
PATA power 4–3  
SATA data 4–1  
SATA power 4–2  
installing/upgrading 1–1  
Service Reference Guide, dx5150  
361685-001  
Index–1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Index  
Diagnostics for Windows  
categories 2–10  
MT removal and replacement 6–10  
SFF removal and replacement 7–8  
external 3.5-inch drive  
SFF removal and replacement 7–17  
external security  
detecting 2–9  
installing 2–9  
Menu Bar 2–11  
overview 2–9  
running tests 2–12  
DIMMs E–1  
disassembly preparation  
F
fan  
MT chassis removal and replacement 6–20  
power supply 5–7  
ST chassis 7–24  
disconnecting  
MT diskette drive cable 6–15  
MT hard drive cable 6–15  
MT optical drive cable 6–14  
disk, cloning 3–1  
diskette drive bezel  
MT removal and replacement 6–6  
SFF removal and replacement 7–6  
diskette drive cable  
MT connecting 6–18  
MT disconnecting 6–15  
drive  
FAT or FAT32 to NTFS conversion 1–2  
flashing LEDs C–4  
formatting disk, important information 3–15  
front bezel  
MT removal and replacement 6–4  
SFF removal and replacement 7–5  
front I/O devices  
MT removal and replacement 6–22  
SFF removal and replacement 7–21  
front I/O panel  
MT removal and replacement 6–21  
capacities 4–6  
G
MT removal and replacement 6–14  
partition size 4–6  
grounding methods 5–3  
drive bezel  
SFF removal and replacement 7–6  
drive positions  
dual-state power button 3–8  
H
hard drive  
proper handling 5–8  
SFF removal and replacement 7–19  
hard drive cable  
MT disconnecting 6–15  
MT connecting 6–19  
E
headphone pin assignments A–3  
heatsink  
entering  
MT removal and replacement 6–26  
MT removaland replacement 6–25  
SFF removal and replacement 7–28  
HP Client Manager 3–2  
HP software. See software  
power-on password 3–12  
error codes C–1  
ESD (electrostatic discharge)  
information 5–2  
materials and equipment 5–4  
preventing damage 5–3  
Ethernet  
AUI pin assignments A–2  
BNC pin assignments A–1  
RJ-45 pin assignments A–2  
expansion card  
I
infrared (IR) transceiver, external, pin assignments  
initial configuration 3–1  
installing Diagnostics for Windows 2–9  
Internet addresses, See Web sites  
invalid system ROM 3–5  
IR transceiver. See infrared (IR) transceiver  
MT removal and replacement 6–11  
SFF removal and replacement 7–9  
expansion slot cover  
Index–2  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Index  
PCI expansion card removal and replacement  
K
keyboard  
power supply removal and replacement 6–34  
power switch assembly removal and  
replacement 6–23  
preparation for disassembly 6–1  
processor removal and replacement 6–26  
speaker removal and replacement 6–33  
system board removal and replacement 6–27,  
cleaning 5–6  
pin assignments A–1  
L
LEDs  
blinking power C–4  
blinking PS/2 keyboard C–4  
line-in audio pin assignments A–3  
line-out audio pin assignments A–4  
monitor  
M
blank screen D–11  
blurry video D–12  
checking connections D–1  
cleaning 5–6  
Master Boot Record Security, setting 3–13  
memory  
dual channel mode E–2  
locating sockets E–2  
dim characters D–12  
pin assignments A–5  
mouse  
MT removal and replacement 6–9  
SFF removal and replacement 7–7  
specifications E–1  
cleaning 5–7  
menu bar, Diagnostics for Windows 2–11  
microphone pin assignments A–3  
µT  
pin assignments A–1  
MT  
heatsink removal and replacement 6–25  
chassis, illustrated 5–1  
MT  
N
numeric codes C–2  
3.5" drive bezel removal and replacement 6–6  
5.25" drive bezel removal and replacement 6–5  
access panel removal and replacement 6–3  
battery removal and replacement 6–29  
cable lock 6–2  
O
operating systems, important information about  
optical drive  
connecting SFF cables 7–16  
SFF removal and replacement 7–14  
optical drive cable  
MT connecting 6–18  
MT disconnecting 6–14  
overheating, prevention 5–5  
chassis fan removal and replacement 6–20  
disassembly preparation 6–1  
diskette drive bezel removal and replacement  
diskette drive cable, connecting 6–18  
diskette drive cable, disconnecting 6–15  
drive positions 6–13  
drive removal and replacement 6–14  
expansion card removal and replacement 6–11  
expansion slot cover 6–10  
P
padlock  
external security 6–2  
parallel interface pin assignments A–2  
partitioning disk, important information 3–15  
password  
power-on 2–1, 3–12  
password security 3–11  
PATA  
front bezel removal and replacement 6–4  
front I/O devices removal and replacement 6–22  
front I/O panel removal and replacement 6–21  
hard drive cable, connecting 6–19  
hard drive cable disconnecting 6–15  
heatsink removal and replacement 6–26  
memory removal and replacement 6–9  
optical drive cable, connecting 6–18  
optical drive cable, disconnecting 6–14  
padlock 6–2  
cable layout 4–4  
data cable pinouts 4–3  
power cable pinouts 4–3  
Service Reference Guide, dx5150  
361685-001  
Index–3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Index  
PCI expansion card  
SFF removal and replacement 7–29  
protecting  
MT removal and replacement 6–11  
PCI Express pin assignments A–8  
POST  
ROM, caution 3–4  
software 2–14  
enabling error messages C–1  
POST (Power-On Self-Test) 2–1  
power button  
PXE (Preboot Execution Environment) 3–2  
Q
Quick Power-On Self Test C–1  
configuring 3–8  
R
dual-state 3–8  
recovering system 3–5  
recovery, software 3–1  
Remote Diagnostics Enabling Agent 2–14  
Remote ROM Flash 3–4  
remote setup 3–2  
power cord set requirements  
country specific B–2  
general B–1  
power supply  
Remote System Installation, accessing 3–2  
removal and replacement  
MT 3.5" drive bezel 6–6  
MT 5.25" drive bezel 6–5  
MT access panel 6–3  
MT removal and replacement 6–34  
SFF removal and replacement 7–32  
power supply, surge-tolerant 3–15  
power switch assembly  
MT removal and replacement 6–23  
SFF removal and replacement 7–22  
power-on password 2–1  
entering 3–12  
MT battery 6–29  
MT cable lock 6–2  
MT chassis fan 6–20  
MT diskette drive bezel 6–6  
MT drive 6–14  
MT expansion card 6–11  
MT front bezel 6–4  
MT front I/O devices 6–22  
MT front I/O panel 6–21  
MT heatsink 6–26  
Power-On Self-Test (POST) 2–1  
Preboot Execution Environment (PXE) 3–2  
preinstalled software image 3–1  
primary hard drive, SFF removal and relacement  
problems  
software D–27  
MT memory 6–9  
problems, solving  
MT padlock 6–2  
audio D–14  
MT PCI expansion card 6–11  
MT power supply 6–34  
MT power switch assembly 6–23  
MT processor 6–25  
CD-ROM and DVD D–24  
diskette D–6  
display D–11  
drive key D–25  
MT speaker 6–33  
hard drive D–8  
MT system board 6–27, 7–30  
SFF battery 7–25  
SFF cable lock 7–2  
installing hardware D–18  
Internet access D–26  
keyboard D–17  
SFF chassis fan 7–24  
memory D–22  
SFF diskette drive bezel 7–6  
SFF expansion slot cover 7–8  
SFF external 3.5-inch drive 7–17  
SFF front bezel 7–5  
network D–20  
optical drives D–24  
power supply D–5  
printer D–16  
SFF front drive bezel 7–6  
SFF front I/O devices 7–21  
processor  
MT removal and replacement 6–26  
Index–4  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Index  
SFF memory 7–7  
SFF optical drive 7–14  
heatsink removal and replacement 7–28  
memory removal and replacement 7–7  
SFF padlock 7–3  
optical drive removal and replacement 7–14  
padlock 7–3  
power supply removal and replacement 7–32  
power switch assembly removal and  
replacement 7–22  
SFF power supply 7–32  
SFF power switch assembly 7–22  
SFF primary hard drive 7–19  
SFF processor 7–29  
SFF speaker 7–23  
preparation for disassembly 7–1  
processor removal and replacement 7–29  
speaker removal and replacement 7–23  
required tools and software 5–7  
restoring software 2–14  
ROM, invalid 3–5  
software  
running tests,Diagnostics for Windows 2–12  
asset tracking 3–9  
Computer Setup Utilities 2–1  
integration 3–1  
Master Boot Record Security 3–13  
protecting 2–14  
S
safety precautions, cleaning 5–5  
SATA  
data cable pinouts 4–1  
power cable pinouts 4–2  
SATA pin assignments A–7  
screws, correct size 5–7  
SCSI pin assignments A–4  
security  
recovery 3–1  
Remote ROM Flash 3–4  
Remote System Installation 3–2  
required 5–7  
restoring 2–14  
setup 1–3  
System Software Manager 3–3  
updating multiple machines 3–3  
software problems D–27  
spare part number  
screwdriver, Torx T-15 5–7  
wrench, tamper-resistant 5–7  
speaker  
MT removal and replacement 6–33  
SFF removal and replacement 7–23  
SSM (System Software Manager) 3–3  
static electricity 5–3  
surge-tolerant power supply 3–15  
system board  
security settings, setup of 3–9  
security, master boot record 3–13  
serial interface pin assignments A–3  
service considerations 5–7  
setup  
software 1–3  
windows 1–1  
setup, initial 3–1  
SFF  
battery removal and replacement 7–25  
cable lock 7–2  
chassis fan removal and replacement 7–24  
disassembly preparation 7–1  
diskette drive bezel removal and replacement  
MT removal and replacement 6–27, 7–30  
system recovery 3–5  
System Software Manager (SSM) 3–3  
T
drive positions 7–10  
expansion slot cover removal and replacement  
temperature control 5–5  
tools, required 5–7  
external 3.5-inch drive removal and replacement  
external security 7–2  
front bezel removal and replacement 7–5  
front drive bezel removal and replacement 7–6  
front I/O devices removal and replacement 7–21  
U
Ultra SCSI pin assignments A–4  
URLs (Web sites). See Web sites  
USB pin assignments A–3  
Service Reference Guide, dx5150  
361685-001  
Index–5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Index  
PC Deployment 3–1  
Remote ROM Flash 3–4  
V
ventilation, proper 5–5  
ROM Flash 3–4  
ROMPaq images 3–4  
support software 3–9  
W
Wake-on-LAN feature D–20  
warnings, battery 5–9  
Web sites  
support software CD subscription 1–1  
System Software Manager 3–3  
wrench, tamper-resistant 5–7  
HP Client Manager Software 3–2  
HPQ Flash 3–5  
Index–6  
361685-001  
Service Reference Guide, dx5150  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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