Troubleshooting
Guide
Compaq Deskpro Family
of Personal Computers
Troubleshooting
Guide
Compaq Deskpro Family
of Personal Computers
Notice
The information in this guide is subject to change without notice.
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HEREIN; NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES
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1999 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.
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referenced herein are trademarks or registered trademarks of Microsoft Corporation.
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The software described in this guide is furnished under a license agreement or
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Troubleshooting Guide
Compaq Deskpro Family of Personal Computers
Second Edition (September 1999)
First Edition (June 1999)
Part Number 122838-002
Compaq Computer Corporation
chapter 1
Troubleshooting
Helpful Hints ............................................................................................................................1-2
Solving General Problems........................................................................................................1-3
Solving Disk Problems.............................................................................................................1-5
Solving Graphics Problems ......................................................................................................1-7
Solving Audio Problems...........................................................................................................1-9
Solving Printer Problems..........................................................................................................1-9
Solving Hardware Installation Problems................................................................................1-10
Solving Network Problems.....................................................................................................1-11
Solving Memory Problems.....................................................................................................1-14
Solving SCSI Problems..........................................................................................................1-14
Solving CD-ROM and DVD Problems ..................................................................................1-15
Solving Software Problems ....................................................................................................1-15
Troubleshooting Using Compaq Intelligent Manageability Features.....................................1-16
Compaq Configuration Record Utility ...................................................................................1-16
Contacting Compaq Customer Support..................................................................................1-17
chapter 2
POST Error Messages
Error Codes...............................................................................................................................2-1
C
ONTENTS
appendix A
Password Security and Cleaing and Resetting CMOS
...................................................................A-1
appendix B
Computer Diagnostics
.......................................................................................................................B-1
appendix C
Drive Protection System (DPS)
......................................................................................................................................................I-1
Index
.........................................................................................................C-1
Troubleshooting
iii
chapter
1
T
ROUBLESHOOTING
This guide provides information on how to identify and correct
minor disk, graphics, memory, and software problems. It also
explains many of the messages that may be displayed on the
screen, including specific error messages that may appear during
the Power-On Self-Test (POST) at startup.
POST Message Disabled suppresses most system messages
during POST, such as memory count and non-error text
messages. In this mode, the Compaq Logo and Web address
appear on the computer monitor. If a POST error occurs, the
screen will display the error message. To manually switch to the
POST Messages Enabled mode during POST, press any key
(except F10 or F12). 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 Boot is a fast startup process that does not run all of the
system level tests, such as the memory test. Full Boot runs all of
the ROM-based system tests and takes longer to complete.
Full Boot may also be enabled to run every 1 to 30 days on a
regularly scheduled basis. To establish the schedule, reconfigure
your computer to the Full Boot Every xx Days mode, using
Computer Setup.
✎
For more information on Computer Setup, refer to the
Making Hardware Changes
guide
.
Troubleshooting
1-1
Helpful Hints
If you encounter some minor problem with your computer,
monitor, or software, refer to the following list of general
suggestions before taking further action:
■
Check that the computer and monitor are plugged into a
working electrical outlet.
■
Check to see that the computer is turned on and the green
power light is on.
■
Check to see that the monitor is turned on and the green
monitor light is on.
■
Turn up the brightness and contrast controls of the monitor
if the monitor is dim.
■
Press and hold any key. If the system beeps, then your
keyboard should be operating correctly.
■
Check all cable connections for loose connections or
incorrect connections.
■
Reconfigure your computer after installing a non–Plug and
Play expansion card or other option. See “Solving Hardware
Installation Problems” for instructions.
■
Be sure that all the needed device drivers have been
installed. For example, if you are using a printer, you need a
printer driver.
Troubleshooting
1-2
■
Take out all diskettes from the diskette drives when you turn
on your system.
Solving General Problems
You may be able to easily resolve the minor problems described
in this section. If a problem persists and you are unable to resolve
it yourself, contact your Compaq authorized dealer or reseller.
Problem Cause Solution
Computer won't turn on Computer is not connected to
an external power source.
Cables to the external power
source are unplugged.
A defective PCI or ISA card
has been installed.
Drive power, data, or power
supply cables may not be
properly connected.
Computer appears
locked up and won’t turn
off when the power
button is pressed
Computer date and time
display is incorrect
Computer powered off
automatically
(Red power LED blinks
four times per second.)
Computer appears to
pause periodically
Software control of the power
switch is not functional.
RTC (real-time clock) battery
may need to be replaced.
Battery life is approximately
5 years.
The unit temperature was
exceeded. The fan may be
blocked.
The unit temperature was
exceeded because the computer
was functioning with the cover or
access panel removed.
Network driver is loaded and
no network connection is
established.
Connect to an external power source.
Ensure that cables connecting the computer to
the external power source are plugged in
properly and the wall outlet is active.
Remove any expansion card that was just
installed.
Reseat drive power, data, and power supply
cables.
Press and hold the power button until the
computer turns off.
First, reset the date and time under Control
Panel. If the problem persists, replace the RTC
battery. Refer to the
guide for instructions on installing a new battery,
or contact your Compaq authorized dealer or
reseller for RTC battery replacement.
1. Unit is in an exceedingly hot environment.
Let it cool down.
2. Ensure computer air vents are not blocked
and internal fan is running.
3. Contact your Compaq authorized reseller or
service provider.
Replace cover or access panel, and let the
computer cool down before attempting to turn on
power to the computer.
Establish a network connection, or use
Computer Setup or Windows Device Manager to
disable the network controller.
Making Hardware Changes
Continued
Troubleshooting
1-3
Solving General Problems
Continued
Problem Cause Solution
Cannot remove computer
cover or access panel
Cursor will not move
using the arrow keys on
the keypad
Smart Cover Lock, featured on
some computers, is locked.
The Num Lock key may be on. Press the Num Lock key. The Num Lock light
Unlock the Smart Cover Lock using Computer
Setup (F10 Setup).
The Smart Cover FailSafe Key, a device for
manually disabling the Smart Cover Lock, is
available from Compaq. You’ll need the FailSafe
Key in case of forgotten password, power loss,
or computer malfunction.
should not be on if you want to use the arrow
keys.
Troubleshooting
1-4
Solving Disk Problems
Common causes and solutions for disk problems are listed in the
following table:
✎
You may need to reconfigure the computer when you add or
remove hardware, such as an additional diskette drive. See
“Solving Hardware Installation Problems” for instructions.
Problem Cause Solution
Diskette drive light
stays on
Diskette drive cannot
write to a diskette
Diskette is damaged. In Windows 95 or 98, run ScanDisk. Click Start
Programs Æ Accessories Æ System Tools
ScanDisk.
In Windows NT, right click Start, click Explore, and
select a drive. Select File Æ Properties Æ Tools.
Under Error-checking, click Check Now.
Diskette is incorrectly
inserted.
Drive button is not pushed in. Push in drive button.
Software program is
damaged.
Drive cable is not properly
connected.
Diskette is not formatted. Format the diskette.
Diskette is write-protected. Use another diskette or remove the write
Writing to the wrong drive. Check the drive letter in your path statement.
Not enough space is left on
the diskette.
Diskette write control is
enabled.
Remove diskette and reinsert.
Check the program diskettes.
Reconnect drive cable.
protection.
Use another diskette.
Use Computer Setup to check your storage
security feature disabled settings.
Æ
Continued
Æ
Troubleshooting
1-5
Solving Disk Problems
Continued
Problem Cause Solution
Cannot format
diskette
A problem has
occurred with a disk
transaction
Diskette drive cannot
read a diskette
Drive not found Cable is loose. Reseat diskette drive cable.
Second Ultra ATA
hard drive does not
perform optimally
Nonsystem disk
message
Invalid media reported. When formatting a disk in DOS, you may need to
specify diskette capacity. For example, to format
a 1.44-MB diskette, type the following command
at the DOS prompt:
FORMAT A: /F:1440
The directory structure is
bad, or there is a problem
with a file.
Diskette is not formatted. Format the diskette.
You are using the wrong
diskette type for the drive
type.
Computer configuration does
not recognize second
diskette drive.
You are using the wrong
cable for the drive type.
The system is trying to start
from a nonsystem diskette.
In Windows 95 or 98, run ScanDisk. Click
Start Æ Programs Æ Accessories Æ System
Tools Æ ScanDisk.
In Windows NT, right click Start, click Explore,
and select a drive. Select File Æ Properties
Tools. Under Error-checking, click Check Now.
Check the type of drive you are using and use
the correct diskette type.
Use Computer Setup (F10 Setup) to enable the
second diskette drive. Select Diskettes from the
Storage menu.
Reinstall the second Ultra ATA hard drive using
an 80-conductor cable. The 80-conductor cable is
standard on select models.
Remove the diskette from the drive.
Æ
Troubleshooting
1-6
Solving Graphics Problems
If you encounter graphics problems, refer to the documentation
that came with your monitor and to the common causes and
solutions listed in the following table:
Problem Cause Solution
Blank screen Monitor is not turned on and
the monitor light is not on.
The cable connections are
not correct.
The energy saver feature
has been enabled.
The RGB (Red, Green,
Blue) input switch on the
monitor is incorrectly set.
System ROM is bad; system
is running in Failsafe Boot
Block mode (indicated by
one long beep and three
short beeps).
You are using a fixed-sync
monitor and it won't sync at
the resolution chosen.
The VGA/BNC selector
switch is not properly set.
Monitor does not
function properly when
used with energy
saver features
Monitor without energy
saver capabilities is being
used with energy saver
features enabled.
Turn on the monitor and check that the monitor light
is on.
Check the cable connection from the monitor to the
computer and to the electrical outlet.
Press any key or click the mouse button and, if set,
type your password.
Set the monitor’s RGB input switch to 75 ohms and,
if there is a sync switch, set it to External.
Reflash the ROM using a ROMPaq diskette. Refer
to the “Failsafe Boot Block ROM” section of the
Desktop Management
Be sure that the monitor can accept the same
sweep rate as the resolution chosen.
Set the selector switch to agree with the cable
connection.
Disable monitor energy saver feature.
guide for more information.
Continued
Troubleshooting
1-7
Solving Graphics Problems
Continued
Problem Cause Solution
Graphics colors are
wrong
Dim characters The brightness and contrast
Blurry video or
requested resolution
cannot be set
Screen goes blank You may have a screen
The picture is broken
up, or it rolls, jitters, or
blinks
Monitor overheats There is not enough
The cabling or monitor
impedance is incorrect.
controls are not set properly.
Cables are not properly
connected.
The RGB switch on the back
of the monitor is incorrectly
set.
If the graphics controller was
upgraded, the correct
graphics drivers may not be
loaded.
blanking utility installed or
energy saver features are
enabled.
The monitor connections
may be incomplete or the
monitor may be incorrectly
adjusted.
ventilation space for proper
airflow.
1. If you are using BNC cables, be sure that the
Red, Green, and Blue BNC cables are
connected to the corresponding monitor
connectors.
2. Be sure your monitor’s RGB inputs are set to
75 ohms.
Adjust the monitor brightness and contrast
controls.
Check that the graphics cable is securely
connected to the graphics card and the monitor.
Set the RGB switch (and sync options, if this
option is available) to 75 ohms, with the sync set
to external. Refer to the documentation included
with the monitor.
Install the video drivers on the diskette included
in the upgrade kit.
Press any key or type password.
1. Be sure the monitor cable is securely
connected to the computer.
2. In a 2-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.
Leave at least 3 inches (7.6 cm) of ventilation
space. Be sure there is nothing sitting on top of
the monitor obstructing the air flow.
Troubleshooting
1-8
Solving Audio Problems
If your computer has audio features and you encounter audio
problems, refer to the common causes and solutions listed in the
following table:
Problem Cause Solution
Sound does not come out
of the speaker or
headphones
Solving Printer Problems
Software volume control is
turned down.
CD-ROM or DVD volume
control on the front of the
computer is turned down.
If you encounter printer problems, refer to the documentation
that came with your printer and to the common causes and
solutions listed in the following table:
Problem Cause Solution
Printer will not
print
Printer will not
turn on
Prints garbled
information
Printer is
offline
Printer is not turned on and online. Turn the printer on and make sure it is online.
The correct printer drivers for your
application are not installed.
If you are on a network, you may
not have made the connection to
the printer.
The cables may not be connected
properly.
The correct printer driver for your
application is not installed.
The cables may not be connected
properly.
The printer may be out of paper. Check the paper tray and refill it if it is empty. Select
Install the correct printer drivers for your application.
Make the proper network connections to the printer.
Reconnect all cables and check the power cord and
electrical outlet.
Install the correct printer driver for your application.
Reconnect all cables.
online.
Double click on the speaker icon on
the taskbar, then set volume by
adjusting the volume slider.
Turn the volume control knob on front
of computer to increase the volume.
Troubleshooting
1-9
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 95 and Windows 98 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 95 and Windows 98, select the Add
New Hardware icon in the Control Panel and follow the instructions
that appear on the screen. To reconfigure the computer in Windows NT
4.0 after installing new hardware, use the utility provided with the
hardware.
Problem Cause Solution
A new device is not
recognized as part of
the computer system
The computer needs to be
reconfigured to recognize the
device.
Cable(s) of new external
device are loose or power
cables are unplugged.
Power switch of new external
device is not turned on.
Follow the reconfiguration instructions above.
Ensure that all cables are properly and securely
connected and that pins in the cable or connector
are not bent down.
Turn off the computer, turn on the external
device, then turn on the computer to integrate the
device with the computer system.
Troubleshooting
1-10
Solving Network Problems
Some common causes and solutions for network problems are
listed in the following table. These guidelines do not discuss the
process of debugging the network cabling.
Problem Cause Solution
Remote Wakeup feature
is not functioning
Network driver does not
detect network controller
Network status link light
does not turn on or
flashes
The Remote Wakeup feature
is not available when using an
AUI network connection.
Remote Wakeup is not
enabled.
Network controller is disabled. Run Computer Setup and enable
No active network is detected. Check cabling and network
Network controller is not set up
properly.
System is configured for AUI
connection.
Network driver is not properly
loaded.
System cannot autosense the
network.
Use an RJ-45 network connection.
Use the Network control application
to enable Remote Wakeup. Refer to
Desktop Management
the
network controller.
equipment for proper connection.
Use the Network control application
to verify that device is working
properly. Refer to the
Communications
No solution; link LED does not apply
to AUI connections.
Reinstall network drivers. Refer to the
Using Network Communications
guide.
Disable autosensing capabilities and
force the system into the correct
operating mode. Refer to the
Network Communications
guide.
guide.
Using Network
Using
guide.
Continued
Troubleshooting
1-11
Solving Network Problems
continued
Problem Cause Solution
Diagnostics reports a
failure
Diagnostics passes, but
the computer does not
communicate with the
network
The cable is not securely
connected.
The cable is attached to the
incorrect connector.
There is a problem with the
cable or a device at the other
end of the cable.
The network controller is
defective.
Network controller interrupt is
shared with an expansion
card.
Network drivers are not
loaded, or driver parameters
do not match current
configuration.
The network controller is not
configured for this computer.
Ensure that the cable is securely
attached to the network connector
and that the other end of the cable is
securely attached to the correct
device.
Ensure that the cable is attached to
the correct connector.
Ensure that the cable and device at
the other end are operating correctly.
Contact your Compaq authorized
service provider.
Under the Computer Setup Advanced
menu, change the resource settings
for the card.
Make sure the network drivers are
loaded and that the driver parameters
match the configuration of the
network controller.
Select the Network icon at the Control
Panel and configure the network
controller.
Continued
Troubleshooting
1-12
Solving Network Problems
continued
Problem Cause Solution
Network controller
stopped working when an
expansion board was
added to the computer
Network controller
stopped working without
apparent cause
New network card will not
boot
Cannot connect to
network server when
attempting Remote
System Installation
Network controller interrupt is
shared with an expansion
board.
The network controller requires
drivers.
The files containing the
network drivers are corrupted.
The files containing the
network drivers are corrupted.
The cable is not securely
connected.
The network controller is
defective.
New network card may not be
Compaq compatible.
The network controller is not
configured properly.
Under the Computer Setup Advanced
menu, change the resource settings
for the board.
Verify that the drivers were not
accidentally deleted when the drivers
for a new expansion board were
installed.
Reinstall the network drivers, using
Compaq Restore CD
the
Reinstall the network drivers, using
Compaq Restore CD
the
Ensure that the cable is securely
attached to the network connector
and that the other end of the cable is
securely attached to the correct
device.
Contact your Compaq authorized
service provider.
Install Compaq-compatible NIC or
change boot sequence to boot from
another device.
Run Computer Setup (F10 Setup)
and modify the NIC Settings.
.
.
Troubleshooting
1-13
Solving Memory Problems
If you encounter memory problems, some common causes and
solutions are listed in the following table:
Problem Cause Solution
System won't boot or
does not function
properly after installing
additional memory
modules
Out of Memory error Memory configuration may not
Memory count during
POST is wrong
Insufficient memory
error during operation
Solving SCSI Problems
Memory module is not the
correct type or speed grade for
the system or the new memory
module is not seated properly.
be set up correctly.
You have run out of memory to
run the application.
The memory modules may not
be installed correctly.
Too many Terminate and Stay
Resident programs (TSRs) are
installed.
You have run out of memory
for your application.
If you encounter SCSI device problems, refer to the common
causes and solutions listed in the following table:
Replace module with the correct industrystandard device for your computer.
Use the Device Manager to check memory
configuration.
Check the application documentation to
determine the memory requirements.
Check that the memory modules have been
installed correctly and that proper modules are
used.
Delete any TSRs that you do not need.
Check the memory requirements for the
application or add more memory to the
computer.
Problem Cause Solution
System with IDE and
SCSI drives will not boot
from SCSI hard drive
System without an IDE
drive will not boot from a
SCSI drive
Troubleshooting
1-14
The IDE drive is not disabled
through the Computer Setup
utility.
The SCSI drive is not
configured correctly.
Under the Computer Setup Advanced
menu, disable the primary IDE
controller.
Ensure that drive cabling and jumpers
are set correctly. To boot a SCSI drive,
the drive ID number must be set to 0.
Solving CD-ROM and DVD Problems
If you encounter CD-ROM or DVD problems, refer to the
common causes and solutions listed in the following table or
to the documentation that came with the optional device.
Problem Cause Solution
System will not boot
from CD-ROM or DVD
drive
CD-ROM or DVD
devices are not
detected or driver is
not loaded
Movie will not play in
the DVD drive
Solving Software Problems
The CD-ROM or DVD boot is
not enabled through the
Computer Setup utility.
Non-bootable CD in drive. Try a bootable CD in the drive.
Drive is not connected
properly or not properly
configured.
Movie may be regionalized for
a different country.
Run the Computer Setup utility (F10 Setup) and set
the drive priorities.
Refer to the documentation that came with the
optional device.
Refer to the documentation that came with the DVD
drive.
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.
Where available, run the Compaq Configuration Utility to
determine if any changes have been made to the software which
may be causing a problem. Refer to the online
Manageability
guide for more information.
Intelligent
Troubleshooting
1-15
Troubleshooting Using Compaq Intelligent Manageability Features
The Local Alert Pop-Up Dialog notifies you of an impending or
actual hardware failure. If the computer is connected to a
network and the Compaq Insight Management Agents are
installed and configured, a Simple Network Management
Protocol (SNMP) trap (message) is sent to the specified SNMPcompliant management application.
The Local Alert Pop-Up Dialog also tells you the steps you need
to take prior to a hardware failure to avoid loss of data and
damage to the computer. The system administrator can create a
customized action message that might include contact telephone
or pager numbers.
To close the Local Alert Pop-Up Dialog, click the Close button.
To retrieve fault information after closing the dialog, run
Computer Diagnostics.
Compaq
Configuration
Record Utility
For more detailed information, refer to the online
Manageability
Compaq Configuration Record Utility is an online informationgathering tool similar to other Compaq management tools. It
gathers critical hardware and software information from various
sources to give a complete view of the computer. Configuration
Record Utility provides a means for automatically identifying
and comparing configuration changes, and has the ability to
maintain a computer configuration history. The information can
be saved as a history of multiple sessions.
This utility was developed to allow resolution of problems
without taking the computer off-line and to assist in maximizing
computer availability. The information obtained by the utility is
useful in troubleshooting computer problems, and streamlines
the service process by enabling quick and easy identification of
computer configurations, which is the first step in resolving
service cases.
The Compaq Configuration Record Utility is accessed via an
icon in the Control Panel. When running the utility, information
is automatically gathered on such items as the operating system
version number, operating system parameters, and the operating
system startup files. The utility then combines this information
with information on the hardware configuration to deliver a
comprehensive view of the computer.
guide and the
Desktop Management
Intelligent
guide.
Troubleshooting
1-16
Contacting Compaq Customer Support
For help and service, contact your Compaq authorized reseller
or dealer. For a list of phone numbers, consult the warranty.
✎
If you take your computer to a Compaq authorized reseller,
dealer, or service provider for service, remember to provide
the setup and power-on passwords, if they are set.
Troubleshooting
1-17
chapter
2
POST E
Error Codes
Message Beeps* Probable Cause Recommended Action
101-Option ROM
Error
102-System Board
Failure
1L, 1S System ROM checksum. 1. Verify the correct ROM
None DMA, timers, etc. 1. Clear CMOS.
This chapter lists the error codes that you may encounter during
the Power-On Self-Test (POST) or computer restart, the
probable source of the problem, and what steps you can take to
resolve the error condition.
Power-On Self-Test Messages
RROR
M
ESSAGES
2. Flash the ROM if needed.
3. If an expansion card was recently
added, remove it and see if the
problem remains.
4. If the message disappears, there
may be a problem with the
expansion card.
5. Replace the system board.
2. Remove expansion boards.
3. Replace the system board.
103-System Board
Failure
* L = Long, S = Short
None DMA, timers, etc. 1. Clear CMOS.
2. Remove expansion boards.
3. Replace the system board.
Continued
Troubleshooting
2-1
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
162-System Options
Not Set
163-Time & Date
Not Set
164-Memory Size
Error
2S Configuration incorrect.
RTC (real-time clock) battery
may need to be replaced.
Battery life is approximately
5 years.
2S Invalid time or date in
configuration memory.
RTC (real-time clock) battery
may need to be replaced.
Battery life is approximately
5 years.
CMOS jumper may not be
properly installed
2S Memory configuration
incorrect.
Run Computer Setup (F10 Setup).
Reset the date and time under Control
Panel. If the problem persists, replace
the RTC battery. Refer to the
Hardware Changes
instructions on installing a new battery,
or contact your Compaq authorized
dealer or reseller for RTC battery
replacement.
Reset the date and time under Control
Panel. If the problem persists, replace
the RTC battery. Refer to the
Hardware Changes
instructions on installing a new battery,
or contact your Compaq authorized
dealer or reseller for RTC battery
replacement.
Check for proper placement of the
CMOS jumper (if applicable).
1. Run Computer Setup (F10 Setup)
or Windows utilities.
2. Make sure your memory
module(s) are installed properly.
3. Verify proper memory module
type.
guide for
guide for
Making
Making
183-Invalid
Processor Jumper
Setting
* L = Long, S = Short
POST Error Messages
2-2
2S System board jumper
improperly set.
Reset system board jumpers to match
processor and bus speeds (select
models).
Continued
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
201-Memory Error None RAM failure. 1. Run Computer Setup (F10 Setup)
or Windows utilities.
2. Ensure memory and continuity
modules are installed correctly.
3. Verify proper memory module
type.
4. Remove and replace the memory
module(s) one at a time to isolate
faulty module.
5. Replace faulty memory module(s).
6. If error persists after replacing
memory modules, replace the
system board.
202-Memory Type
Mismatch
207-ECC Corrected
Single Bit Errors in
DIMM/SIMM Pair(s)
x,x in Memory
Module Socket(s)
y,y,…
213-Incompatible
DIMM Module in
DIMM Socket(s) X,
X, …
301-Keyboard Error None Keyboard failure. 1. Reconnect keyboard with
* L = Long, S = Short
None Memory modules do not
match each other.
2S Single Bit ECC error. 1. Verify proper memory module
2S A DIMM module in DIMM
socket identified in the error
message is missing critical
SPD information, or is
incompatible with the chipset.
Replace memory modules with
matched sets.
type.
2. Try another memory socket.
3. Replace memory module if
problem persists.
1. Verify proper memory module
type.
2. Try another memory socket.
3. Replace DIMM with a module
conforming to the SPD standard.
computer turned off.
2. Check connector for bent or
missing pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
Continued
Troubleshooting
2-3
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
304-Keyboard or
System Unit Error
401-Parallel Port 1
Address Assignment
Conflict
403-Parallel Port 3
Address Conflict
Detected
404-Parallel Port
Address Conflict
Detected
410-Audio Interrupt
Conflict
411-Network
Interface Card
Interrupt Conflict
501-Display Adapter
Failure
* L = Long, S = Short
None Keyboard failure. 1. Reconnect the keyboard with
computer turned off.
2. Ensure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
2S IRQ address conflicts with
another device.
2S IRQ address conflicts with
another device.
2S Both external and internal
ports are assigned to parallel
port X.
2S IRQ address conflicts with
another device.
2S IRQ address conflicts with
another device.
1L, 2S Graphics display controller. 1. Reseat the graphics card (if
Reset the IRQ.
Reset the IRQ.
1. Remove any parallel port
expansion cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
Reset the IRQ.
Reset the IRQ.
applicable).
2. Clear CMOS.
3. Verify monitor is attached and
turned on.
4. Replace the graphics controller.
Continued
POST Error Messages
2-4
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
601-Diskette
Controller Error
602-Diskette Boot
Record Error
605-Diskette Drive
Type Error
610-External
Storage Device
Failure
611-Primary Floppy
Port Address
Assignment Conflict
612-Secondary
Floppy Port Address
Assignment Conflict
660-Display cache is
detected unreliable
912- Computer
Cover Has Been
Removed Since Last
System Startup
* L = Long, S = Short
None Diskette controller circuitry or
floppy drive circuitry incorrect.
None Diskette in Drive A not
bootable.
2S Mismatch in drive type. 1. Run Computer Setup (F10 Setup)
None External tape drive not
connected.
2S Configuration error. 1. Run Computer Setup (F10 Setup).
2S Configuration error. 1. Run Computer Setup (F10 Setup).
None Integrated graphics controller
display cache not working
properly and will be disabled.
None No action required.
1. Run Computer Setup (F10 Setup).
2. Check and/or replace cables.
3. Clear CMOS.
4. Replace diskette drive.
5. Replace the system board.
Replace the diskette.
or Windows NT, Windows 95, or
Windows 98 utilities.
2. Disconnect any other diskette
controller devices (tape drives).
3. Clear CMOS.
Reinstall tape drive or press F1 and
allow system to reconfigure without the
drive.
2. Remove expansion cards.
3. Clear CMOS.
2. Remove expansion cards.
3. Clear CMOS.
Replace system board if minimal
graphics degrading is an issue.
Continued
Troubleshooting
2-5
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
914-Hood Lock Coil
is not Connected
916-Thermal Sensor
from Processor
Heatsink is not
Connected
917-Expansion Riser
not Detected
1151-Serial Port 1
Address Conflict
Detected
1152- Serial Port 2
Address Conflict
Detected
1155-Serial Port
Address Conflict
Detected
1201-System Audio
Address Conflict
Detected
* L = Long, S = Short
None Smart Cover Lock mechanism
is missing or not connected.
None Processor heatsink cable not
connected to system board.
None Riser board not seated or not
installed.
2S Both external and internal
serial ports are assigned to
COM1.
2S Both external and internal
serial ports are assigned to
COM2.
2S Both external and internal
serial ports are assigned to
same IRQ.
2S Device IRQ address conflicts
with another device.
1. Reconnect or replace Smart Cover
Lock.
2. Reseat or replace Smart Cover
Lock cable.
Reseat or replace the processor
heatsink cable going to the system
board.
Install riser board if missing or remove
and reseat to ensure good connection.
1. Remove any serial port expansion
cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
1. Remove any serial port expansion
cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
1. Remove any serial port expansion
cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
Reset the IRQ.
Continued
POST Error Messages
2-6
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1202-MIDI Port
Address Conflict
Detected
1203-Game Port
Address Conflict
Detected
1720-SMART Hard
Drive Detects
Imminent Failure
1721-SMART SCSI
Hard Drive Detects
Imminent Failure
1771-Primary Disk
Port Address
Assignment Conflict
* L = Long, S = Short
2S Device IRQ address conflicts
with another device.
2S Device IRQ address conflicts
with another device.
None Hard drive is about to fail.
(Some hard drives have a
firmware patch that will fix an
erroneous error message).
None Hard drive is about to fail.
(Some hard drives have a
firmware patch that will fix an
erroneous error message).
2S Internal and external hard
drive controllers are both
assigned to the primary
address.
Reset the IRQ.
Reset the IRQ.
1. Determine if hard drive is giving
correct error message. Run the
Drive Protection System test if
available.
2. Apply firmware patch if applicable.
3. Back up contents and replace hard
drive.
1. Determine if hard drive is giving
correct error message.
2. Apply firmware patch if applicable.
3. Back up contents and replace hard
drive.
1. Remove any serial port expansion
cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
Continued
Troubleshooting
2-7
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1772-Secondary
Disk Port Address
Assignment Conflict
1780-Disk 0 Failure None Hard drive/format error. 1. Run Computer Setup (F10 Setup).
1781-Disk 1 Failure None Hard drive/format error. 1. Run Computer Setup (F10 Setup).
* L = Long, S = Short
2S Internal and external hard
drive controllers are both
assigned to the secondary
address.
1. Remove any serial port expansion
cards.
2. Clear CMOS.
3. Reconfigure card resources and/or
run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Check cables/jumper settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System
test if available.
7. Replace the hard drive.
2. Clear CMOS.
3. Check cables/jumper settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System
test if available.
7. Replace the hard drive.
Continued
POST Error Messages
2-8
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1782-Disk Controller
Failure
1790-Disk 0 Error None Hard drive error or wrong
* L = Long, S = Short
None Hard drive circuitry error. 1. Run Computer Setup (F10 Setup).
drive type.
2. Clear CMOS.
3. Check cable seating/jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System
test if available.
7. Replace the hard drive.
8. Replace the system board.
1. Run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Check cable seating jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Confirm drive is supported on this
computer (large drive ROM
support).
7. Run the Drive Protection System
test if available.
8. Replace the hard drive.
9. Replace the system board.
Continued
Troubleshooting
2-9
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1791-Disk 1 Error None Hard drive error or wrong
drive type.
1792-Secondary
Disk Controller
Failure
None Hard drive circuitry error. 1. Run Computer Setup (F10 Setup).
1. Run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Check cable seating/jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Confirm drive is supported on this
computer (large drive ROM
support).
7. Run the Drive Protection System
test if available.
8. Replace the hard drive.
9. Replace the system board.
2. Clear CMOS.
3. Check cable seating/jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System
test if available.
7. Replace the hard drive.
1793-Secondary
Controller or Disk
Failure
* L = Long, S = Short
POST Error Messages
2-10
None Hard drive circuitry error. 1. Run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Check cable seating/jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System
test if available.
7. Replace the hard drive.
Continued
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1800-Temperature
Alert
1801 None Processor not supported by
Audible 1L, 3S System ROM is bad; system
None Internal temperature exceeds
specification.
ROM Bios.
is running in Failsafe Boot
Block mode.
1. Check that computer air vents are
2. Verify processor speed selection.
3. Replace the processor.
4. Replace the system board.
Upgrade BIOS to proper version.
Reflash the ROM using a ROMPaq
diskette. Refer to the “Failsafe Boot
Block ROM” section of the
Manageability
Audible 2S Power-on successful. None.
Flashing Caps Lock
LED on Keyboard
Flashing Num Lock
LED on Keyboard
Num Lock LED ON
(keyboard)
1L, 2S Graphics controller not
present or incorrectly
initialized.
1S, 2L System memory not present. 1. Check memory module (refer to
None Failed Boot Block. Reflash the ROM using a ROMPaq
1. Following directions in Appendix A
2. If graphics card has been added,
2. Remove and reseat memory
3. See the “Solving Memory
diskette. Refer to the “Failsafe Boot
Block ROM” section of the
Manageability
Flashing Scroll Lock
LED on keyboard
* L = Long, S = Short
2L, 1S System board hardware
failure (prior to graphics).
Replace system board.
not blocked and cooling fan is
running.
Intelligent
guide.
to clear CMOS.
remove and reseat.
the relevant section of the
Hardware Changes
module.
Problems” section of this guide.
Making
guide).
Intelligent
guide.
Continued
Troubleshooting
2-11
Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
Green Power LED
Blinks 1x / Second.
Green Power LED
On
Invalid Electronic
Serial Number
Flashing Power and
Hard Drive Green
LEDs
Red Power LED
Blinks Every 2 or
more Seconds.
None Computer in normal Suspend
mode.
None Computer on. None
None Electronic serial number has
become corrupted.
None Unseated riser board. 1. Remove riser board.
None Power supply overloaded. 1. Push in power button. LED should
None
Run Computer Setup. If Setup already
has data in the field or will not allow the
serial number to be entered, download
from www.compaq.com and run
SP5572.EXE (SNZERO.EXE).
2. Wipe connector.
3. Reinstall (refer to the
Hardware Changes
directions on removing the riser
board).
be green.
2. Remove all AC power from
computer, wait 30 seconds, then
apply power.
3. Remove load from power supply
by removing options one at a time
until computer runs.
4. Check for damage to system
board.
5. Replace system board.
6. Replace power supply.
Making
guide for
Red Power LED
Blinks Every Second
* L = Long, S = Short
POST Error Messages
2-12
None System memory error. 1. Check memory module (refer to
the relevant section of the
Hardware Changes
2. Remove and reseat memory
module.
3. See the “Solving Memory
Problems” section of this guide.
Making
guide).
Continued
Power-On Self-Test Messages
Message Beeps* Probable Cause Recommended Action
Continued
Red Power LED
Blinks Four Times
per Second
Red Power LED On None Processor unseated. Reseat processor in system board.
* L = Long, S = Short
If you have replaced the standard keyboard with a Universal Serial Bus (USB) keyboard, you
✎
None Computer overheated. 1. Install computer cover or access
panel if necessary.
2. Ensure that computer air vents are
not blocked and internal fan is
running.
will hear the beep sequences for these error codes but will not see the flashing keyboard lights.
Troubleshooting
2-13
appendix
A
P
ASSWORD SECURITY AND
C
LEARING AND RESETTING
This computer supports security password features, which can
be established through the Computer Setup Utilities menu.
This computer supports two security password features that are
established through the Computer Setup (F10 Setup) Utilities
menu: setup password and power-on password. When you
establish only a setup password, any user can access all the
information on the computer except Computer Setup (F10
Setup). When you establish only a power-on password, the
power-on password is required to access Computer Setup (F10
Setup) and any other information on the computer. When you
establish both passwords, only the setup password will give you
access to Computer Setup (F10 Setup).
When both passwords are set, the setup password can also be
used in place of the power-on password as an override to log
into the computer. This is a useful feature for a network
administrator.
If you forget the password for your computer, there are two
methods for clearing that password so you may gain access to
the information on the computer:
■
Resetting the password jumper
CMOS
■
Using the Clear CMOS button
CAUTION:
factory defaults and will erase any customized information
including passwords, asset numbers, and special settings.
Pushing the CMOS button will reset CMOS values to
Troubleshooting
A-1
Resetting the Password Jumper
To disable the power-on or setup password features, or to
clear the power-on or setup passwords, complete the
following steps:
1. Turn off the computer and any external devices, and
disconnect the power cord from the power outlet.
2. Disconnect the keyboard, monitor, and any other external
devices connected to the computer.
WARNING:
!
shock and/or hot surfaces, be sure to disconnect the power cord
from the wall outlet, and allow the internal system components to
cool before touching.
CAUTION:
always has voltage applied to the system board even when the unit
is turned off. Failure to disconnect the power cord can result in
damage to the system.
CAUTION:
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. Refer
to the
To reduce the risk of personal injury from electrical
When the computer is plugged in, the power supply
Static electricity can damage the electronic
Safety & Regulatory Information
guide for more information.
3. Remove the computer cover or access panel.
Password Security and Cleaning and Resetting CMOS
A-2
4. Locate the header and jumper labeled E49.
Location and Identification of the Password Jumper on a Compaq Deskpro EP System
Board (Intel 810 Chipset)
Location and Identification of the Password Jumper on a Compaq Deskpro EN System
Board (Intel 810 Chipset)
Troubleshooting
A-3
Location and Identification of the Password Jumper on a Compaq Deskpro EN SFF, FrontMounted Audio Solution System Board (Intel 810 Chipset)
5. Remove the jumper from pins 1 and 2. Place the jumper
over pin 2 only, in order to avoid losing it.
6. Replace the computer cover or access panel.
7. Reconnect the external equipment.
8. Plug in the computer and turn on power. Allow the
operating system to start. This clears the current passwords
and disables the password features.
9. To re-enable the password features, repeat steps 1-4, then
replace the jumper on pins 1 and 2.
Repeat steps 6-8, then establish new passwords. Refer to
Making Hardware Changes
the
guide for Computer Setup
(F10 Setup) instructions.
Password Security and Cleaning and Resetting CMOS
A-4
Clearing and Resetting the CMOS
Using the CMOS Button
The computer’s configuration memory (CMOS) stores
password information as well information about the computer’s
configuration.
1. Turn off the computer and any external devices, and
disconnect the power cord from the power outlet.
2. Disconnect the keyboard, monitor, and any other external
equipment connected to the computer.
WARNING:
!
shock and/or hot surfaces, be sure to disconnect the power cord
from the wall outlet, and allow the internal system components to
cool before touching.
CAUTION:
always has voltage applied to the system board even when the unit
is turned off. Failure to disconnect the power cord can result in
damage to the system.
CAUTION:
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. Refer
to the
To reduce the risk of personal injury from electrical
When the computer is plugged in, the power supply
Static electricity can damage the electronic
Safety & Regulatory Information
guide for more information.
3. Remove the computer cover or access panel.
Troubleshooting
A-5
4. Locate, press, and hold the CMOS button in for 5 seconds.
CAUTION:
factory defaults and will erase any customized information
including passwords, asset numbers, and special settings.
CMOS Pushbutton
5. Replace the computer cover or access panel.
6. Reconnect the external devices.
Pushing the CMOS button will reset CMOS values to
7. Plug in the computer and turn on power.
✎
You will need to reset your passwords and any special system
setups. Refer to the “Using Computer Setup” section below for
further instructions.
Using Computer Setup to Reset CMOS
To reset CMOS, you must first access the Computer Setup (F10
Setup) Utilities menu.
When the Computer Setup (F10 Setup) message appears in the
lower-right corner of the screen, press the F10 key. Press Enter
to bypass the title screen, if necessary.
Password Security and Cleaning and Resetting CMOS
A-6
✎
If you do not press the F10 key while the message is
displayed, you must turn the computer off, then on again,
to access the utility.
A choice of five headings appears in the Computer Setup (F10
Setup) Utilities menu: File, Storage, Security, Power, and
Advanced.
To reset CMOS to the factory default settings use the arrow
keys or the Tab key to select File→Set Defaults and Exit.
Refer to the
on reestablishing passwords. For instructions on Computer
Setup (F10 Setup), see
Desktop Management
Making Hardware Changes
guide for further instructions
.
Troubleshooting
A-7
appendix
B
C
OMPUTER DIAGNOSTICS
Compaq Diagnostics for Windows
Compaq Diagnostics for Windows is a component of Intelligent
Manageability that allows you to view:
■
System overview
■
AssetControl information
■
Input devices
■
Communications ports
■
Storage devices
■
Graphics information
■
Memory configuration
■
Security management settings
■
System health
■
Operating system
■
Windows version
Depending on the version, Compaq Diagnostics for Windows
may include diagnostic tests to determine if all the devices
installed on the computer are recognized by the system and are
functioning properly.
Troubleshooting
B-1
Using Compaq Diagnostics for Windows
1. Select the Compaq Diagnostics icon, located in the Control
Panel.
The screen displays an overview of the computer hardware
and software.
2. For specific hardware and software information, select a
category from the Categories menu or from the toolbar.
✎
As you move your cursor over the toolbar icons, the
corresponding category names appear near the cursor.
3. To display more detailed information in a selected
category, click More in the Information Level box.
4. Review and print this information and, if necessary, discuss
it with your authorized Compaq reseller or service
provider.
✎
To print the information, click File, then select 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.
Computer Diagnostics
B-2
5. To exit Compaq Diagnostics for Windows, click File, then
click Exit.
Running Diagnostic Tests
If your version of Compaq Diagnostics for Windows includes
diagnostic testing utilities, four tabs will appear next to
Overview: Test, Status, Log, and Error.
1. Select the Test tab.
2. Select one of the following options:
❏
❏
❏
3. Select Interactive Mode or Unattended Mode.
In Interactive Mode, the diagnostic software will prompt
you for input during tests that require it. Some tests require
interaction and will display errors or halt testing if selected
in conjunction with Unattended Mode.
Quick Test—
Runs a quick, general test on each
device with a minimal number of prompts.
Complete Test—
Runs maximum testing of each
device with minimal prompts.
Custom Test—
Runs only the tests you select. To
select specific devices or tests, find the device in the
list, then click the box beside each test to select or
deselect it. When selected, a red check mark appears in
the box.
4. Click the Begin Testing button.
Test Status is displayed, showing the progress and result of
each test.
5. If errors are found, click the Error tab to display more
detailed information and recommended actions. By
following the recommended actions, you may be able to
solve some problems yourself.
6. Click Print or Save the error information in case you need
to contact your Compaq authorized dealer, reseller, or
service provider for assistance.
7. To exit Compaq Diagnostics for Windows, click File, then
click Exit.
Troubleshooting
B-3
appendix
C
DRIVE PROTECTION SYSTEM (DPS)
Introducing the Drive Protection System
The Compaq Drive Protection System (DPS) is a diagnostic
tool built into the hard drives installed in select Compaq
Deskpro computers. DPS is designed to help diagnose problems
that might result in unwarranted hard drive replacement.
When Compaq Deskpro Computers are built, each installed hard
drive is tested using DPS and a permanent record of key
information is written onto the drive. Each time DPS is run, test
results are written to the hard drive. Your service provider can
use this information to help diagnose conditions that caused you
to run the DPS software.
Running DPS will not affect any programs or data stored on the
hard drive. The test resides in the hard drive firmware and can
be executed even if the computer will not boot to an operating
system. The time required to execute the test depends on the
manufacturer and size of the hard drive; in most cases, the test
will take approximately 2 minutes per gigabyte.
Use DPS when you suspect a hard drive problem. If the
computer reports a SMART Hard Drive Detect Imminent
Failure message, there is no need to run DPS; instead, back up
the information on the hard drive and contact your Compaq
service provider for a replacement hard drive.
Troubleshooting
C-1
Accessing DPS Through Compaq Diagnostics for Windows
To access DPS through Compaq Diagnostics for Windows,
perform the following steps:
1. Turn on the computer and select My Computer→Control
Panel→Compaq Diagnostics.
A choice of five possible headings appears in the
Diagnostics screen: Overview, Test, Status, Log, and Error.
2. Select Test→Type of Test
A choice of three tests appear: Quick Test, Complete Test,
and Custom Test.
3. Select Custom Test.
A choice of two test modes is offered: Interactive Mode
and Unattended Mode.
4. Select Interactive Test→Storage→Hard Drives.
5. Select the specific drive(s) to be tested→Drive Protection
System Test→Begin Testing.
When the test has been completed, one of three messages will be
displayed for each of the drives tested:
■
Test Succeeded. Completion Code 0.
Drive Protection System (DPS)
C-2
■
Test Aborted. Completion Code 1 or 2.
■
Test Failed. Drive Replacement Recommended. Completion
Code 3 through 14.
If the test failed, the completion code should be recorded and
reported to your service provider for help in diagnosing the
computer problem.
Accessing DPS Through Computer Setup
When the computer does not power-on properly you should use
Computer Setup (F10 Setup) to access the DPS program. To
access DPS, perform the following steps:
1. Turn on or restart the computer.
2. When the F10 Setup message appears in the lower-right
corner of the screen, press the F10 key.
✎
If you do not press the F10 key while the message is
displayed, you must turn the computer off, then on again,
to access the utility.
A choice of five headings appears in the Computer Setup
Utilities menu: File, Storage, Security, Power, and Advanced.
3. Select Storage→IDE DPS Self-Test.
The computer screen will display the list of DPS-capable
hard drives that are installed on the computer.
✎
If no DPS capable hard drives are installed, the IDE DPS
Self-Test option will not appear on the screen.
4. Select the hard drive to be tested and follow the screen
prompts to complete the testing process.
When the test has been completed, one of three messages will be
displayed:
■
Test Succeeded. Completion Code 0.
■
Test Aborted. Completion Code 1 or 2.
■
Test Failed. Drive Replacement Recommended. Completion
Code 3 through 14.
If the test failed, the completion code should be recorded and
reported to your service provider for help in diagnosing the
computer problem.
Troubleshooting
C-3
I
NDEX
A
audio problems, solving, 1-9
B
boot modes, 1-1
C
CD-ROM problems, solving, 1-15
CMOS
resetting, A-5
CMOS, clearing, A-5
Compaq Diagnostics for Windows, B-1
Complete Test, B-3
computer setup, 1-1
configuration memory, clearing, A-5
Custom Test, B-3
customer support, 1-17
D
diagnostic testing, B-3
Diagnostics for Windows, B-1
disk problems, solving, 1-5
DVD problems, solving, 1-15
I
Intelligent Manageability, 1-16
Interactive Mode, B-3
L
Local Alert Pop-Up Dialog, 1-16
M
memory problems, solving, 1-14
N
network problems, solving, 1-11
P
passwords, disabling or clearing, A-2
Plug and Play, 1-10
power-on password, A-1
Power-On Self-Test (POST) messages,
2-1
Q
Quick Test, B-3
E
error codes, 2-1
G
graphics problems, solving, 1-7
H
hardware installation problems, solving,
1-10
R
reconfiguring the computer, 1-5, 1-10
S
SCSI problems, solving, 1-14
setup password, A-1
software problems, solving, 1-15
solving general problems, 1-3
Index
I-1
T
troubleshooting
audio problems, 1-9
CD-ROM problems, 1-15
contacting Compaq customer
support, 1-17
disk problems, 1-5
DVD problems, 1-15
graphics problems, 1-7
hardware installation problems, 1-10
helpful hints, 1-2
memory problems, 1-14
network problems, 1-11
SCSI problems, 1-14
software problems, 1-15
solving general problems, 1-3
U
Unattended Mode, B-3
I-2
Index
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