Dell Precision 690 – страница 2
Инструкция к Компьютеру Dell Precision 690
Оглавление
- Примечания, символы внимания и предупреждения
- Содержание
- Поиск информации Возможные направления поиска Где искать
- Возможные направления поиска Где искать
- Возможные направления поиска Где искать
- Возможные направления поиска Где искать
- Установка компьютера 1 2
- 3
- Видеоплата для подключения одного и двух мониторов, с одним разъемом
- Видеоплата для подключения двух мониторов, с одним DVI- и одним VGA-разъемом Видеоплата для подключения двух мониторов, с двумя DVI-разъемами
- 4 5
- 6 О компьютере
- Вид спереди
- 6
- 13
- Вид сзади
- Разъемы на задней панели 4
- 13
- Вид изнутри
- Элементы системной платы
- 17
- Устройство Цвет Дополнительная информация, содержащаяся в руководстве пользователя
- Снятие крышки корпуса компьютера 1 2 3 4
- 5 6 7 8
- Подставка компьютера Установка подставки компьютера
- 9
- Снятие подставки компьютера
- Решение проблем Советы по устранению неполадок Несовместимость программного и аппаратного обеспечения
- Создание точки восстановления Восстановление предыдущего работоспособного состояния компьютера Отмена последнего восстановления системы
- Включение функции System Restore Использование последней работоспособной конфигурации Другие возможности решения конфликтов аппаратного и программного обеспечения Программа диагностики Dell Diagnostics Когда использовать программу Dell Diagnostics
- Запуск программы Dell Diagnostics с жесткого диска Запуск программы Dell Diagnostics с компакт-диска Drivers and Utilities
- Перед началом тестирования Звуковые коды Код Причина
- Код Причина
- Сообщения об ошибках Индикаторы диагностики Коды индикаторов диагностики перед выполнением теста POST Индикаторы диагностики
- Индикаторы диагностики
- Индикаторы диагностики Сигналы диагностических светодиодов во время процедуры POST Светодиоды Описание проблемы Варианты решения
- Светодиоды Описание проблемы Варианты решения
- Светодиоды Описание проблемы Варианты решения
- Светодиоды Описание проблемы Варианты решения
- Светодиоды Описание проблемы Варианты решения
- Часто задаваемые вопросы Как сделать... Решение Источник информации
- Как сделать... Решение Источник информации
- Индекс
- 270 Индекс
- Индекс 271

Inside View
1 power supply
2 hard drive bay
3 memory shroud
NOTICE: The memory shroud holds the
(optional) memory riser cards in place; its
thumbscrews must be sufficiently tight in order
to secure the risers and to avoid damage.
4 front fan
5 card fan
6 5.25-inch drive bay with 3.5-inch drive panel plate
7 5.25-inch drive bay
Quick Reference Guide 21
1
2
7
3
6
45

System Board Components
22 Quick Reference Guide
2 3456 9
33
31
26272829
1 8
10
11
12
14
15
16
17
18
19
21
7
13
32
20
30
232425
22

1 secondary processor connector (CPU_1) 18 FlexBay connector (USB)
2 front fan connector (FAN_FRONT) 19 floppy drive (DSKT)
3 card cage fan connector (FAN_CCAG) 20 front panel connector (FRONTPANEL)
4 internal speaker connector (INT_SPKR) 21 front panel 1394 connector (FP1394)
5 power connector (POWER2) 22 chassis intrusion header (INTRUDER)
6 IDE drive connector (IDE) 23 PCI-Express x8 card slot, wired as x4
(SLOT7_PCIE)
7 password jumper (PSWD) 24 PCI-X card slot (SLOT6_PCIX)
8 auxiliary hard-drive LED connector
25 PCI-X card slot (SLOT5_PCIX)
(AUX_LED)
9 battery socket (BATTERY) 26 PCI card slot (SLOT4_PCI)
NOTE: This slot is not available in the dual-
graphics configuration
10 SATA connectors
27 PCI-Express x8 card slot, wired as x4
(SATA_0, SATA_1, SATA_2)
(SLOT3_PCIE)
NOTE: In the dual-graphics configuration, this slot
is replaced by a x16 slot on the graphics riser.
It holds a graphic card.
11 RTC reset jumper (RTCRST) 28 PCI-Express x16 card slot (SLOT2_PCIE)
NOTE: This slot is not available in the dual-
graphics configuration
12 main power connector (POWER1) 29 PCI-Express x8 card slot, wired as x4
(SLOT1_PCIE)
NOTE: In the dual-graphics configuration, this slot
is replaced by a x16 slot on the graphics riser. It
holds a graphics card.
13 hard drive connector (HDD_3) 30 memory fan connector (FAN_MEM)
14 hard drive connector (HDD_2) 31 white memory module connectors (DIMM_1-4)
support memory modules or memory module
risers
15 hard drive connector (HDD_1) 32 black memory module connectors (DIMM_5-8)
support memory modules only when no memory
riser cards are installed; otherwise these must be
left empty
16 hard drive connector (HDD_0) 33 primary processor connector (CPU_0)
17 hard drive fan (FAN_HDD)
Quick Reference Guide 23

Cable Colors
Device Color
Hard drive (with on-board controller) blue cable
Floppy drive black pull-tab
CD/DVD drive orange pull-tab
Locating Your User’s Guide
Your
User’s Guide
contains additional information about your computer such as:
• Technical specifications
• Front and back views of your computer, including all of the available connectors
• Inside views of your computer, including a detailed graphic of the system board and the connectors
• Instructions for cleaning your computer
• Information on software features, such as Legacy Select Technology control, using a password, and
system setup options
• Tips and information for using the Microsoft Windows XP operating system
• Instructions for removing and installing parts, including memory, cards, drives, the microprocessor,
and the battery
• Information for troubleshooting various computer problems
• Instructions for using the Dell Diagnostics and reinstalling drivers
• Information on how to contact Dell
You can access the
User’s Guide
from your hard drive or the Dell Support website at
support.dell.com
.
Removing the Computer Cover
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
removing the cover.
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to
maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always
lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other
important safety information.
CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to
install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to
the computer.
24 Quick Reference Guide

NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your
body before you touch any of your computer’s electronic components. You can do so by touching an unpainted
metal surface on the computer.
1
Follow the procedures in "Before You Begin" in the
User’s Guide
.
NOTICE: Opening the computer cover while the computer is running could result in a shutdown without warning
and a loss of data in open programs. The computer cooling system cannot function properly while the cover is
removed.
2
If you have installed a security cable, remove it from the security cable slot.
3
Carefully, with the help of an assistant, remove the computer stand (see "Removing the Computer
Stand").
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to
maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always
lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other
important safety information.
CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to
install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to the
computer.
NOTICE: Ensure that you are working on a level, protected surface to avoid scratching either the computer or the
surface on which it is resting.
4
Carefully, with the help of an assistant, lower your computer down to a flat surface with the cover
facing up.
5
Pull back the cover latch release.
NOTICE: Ensure that sufficient space exists to support the removed cover—at least 30 cm (1 ft) of desk top space.
Quick Reference Guide 25

1
2
3
1 cover latch release
2 computer cover
3 cover hinges
6
Locate the three hinge tabs on the edge of the computer.
7
Grip the sides of the computer cover and pivot the cover up, using the hinges as leverage points.
8
Release the cover from the hinge tabs and set it aside in a secure location.
NOTICE: The computer cooling system cannot function properly while the computer cover is not installed.
Do not attempt to boot the computer before reinstalling the computer cover.
26 Quick Reference Guide

Computer Stand
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to
maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always
lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other
important safety information.
CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to
install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to
the computer.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
removing the cover.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your
body before you touch any of your computer’s electronic components. You can do so by touching an unpainted
metal surface on the computer.
Attaching the Computer Stand
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to
maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always
lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other
important safety information.
CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to
install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to
the computer.
1
Follow the procedures in "Before You Begin" in the
User’s Guide
.
2
If you have installed a security cable, remove it from the security cable slot.
3
Set the stand on the ground in front of the computer, so that the front and the back of the stand touch
the ground.
If the front and the back of the stand point up toward the ceiling, the stand is upside down.
4
Ensure that the alignment guide faces the computer.
If the alignment guide points away from the computer, the stand is backwards.
Quick Reference Guide 27

1
3
2
1 computer
2 computer stand
3 alignment guide
5
Align the center of the stand with the center of the computer.
6
Carefully, with the help of an assistant, tilt the computer backwards slightly- just high enough to slide
the stand beneath it.
7
Slide the rear of the stand into the rear foot of the computer, and ensure that the alignment guide
slides into place.
8
Center the front bar of the stand in the corresponding notch in the front foot of the computer.
9
Carefully set the computer back down; the front bar of the stand should snap into place under
the weight of the computer.
28 Quick Reference Guide

Removing the Computer Stand
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55 lbs) and can be difficult to
maneuver. Seek assistance before attempting to lift, move, or tilt it; this computer requires a two-man lift. Always
lift correctly to avoid injury; avoid bending over while lifting. See your Product Information Guide for other
important safety information.
CAUTION: The computer stand should be installed at all times to ensure maximum system stability. Failure to
install the stand could result in the computer tipping over, potentially resulting in bodily injury or damage to
the computer.
1
Follow the procedures in "Before You Begin" in the
User’s Guide
.
2
Carefully, with the help of an assistant, tip the computer back at a very slight angle from the ground.
3
Pull the front of the computer stand down towards the ground, to release it from the front of the
computer.
4
Pull the computer stand toward the front of the computer until the stand is free.
Caring for Your Computer
To help maintain your computer, follow these suggestions:
• To avoid losing or corrupting data, never turn off your computer when the hard drive light is on.
• Schedule regular virus scans using virus software.
• Manage hard drive space by periodically deleting unnecessary files and defragmenting the drive.
• Back up files on a regular basis.
• Periodically clean your monitor screen, mouse, and keyboard (see your
User’s Guide
for more
information).
Solving Problems
Troubleshooting Tips
Perform the following checks when you troubleshoot your computer:
• If you added or removed a part before the problem started, review the installation procedures
and ensure that the part is correctly installed.
• If a peripheral device does not work, ensure that the device is properly connected.
• If an error message appears on the screen, write down the exact message. The message may help
technical support personnel diagnose and fix the problem(s).
• If an error message occurs in a program, see the program’s documentation.
• If the recommended action in the troubleshooting section is to see a section in your
User’s Guide
,
go to
support.dell.com
(on another computer if necessary) to access your
User’s Guide.
Quick Reference Guide 29

Resolving Software and Hardware Incompatibilities
If a device is either not detected during the operating system setup or is detected but incorrectly configured,
you can use the Hardware Troubleshooter to resolve the incompatibility.
To resolve incompatibilities using the Hardware Troubleshooter:
1
Click the
Start
button and click
Help and Support
.
2
Ty p e
hardware troubleshooter
in the
Search
field and click the arrow to start the search.
3
Click
Hardware Troubleshooter
in the
Search Results
list.
4
In the
Hardware Troubleshooter
list, click
I need to resolve a hardware conflict on my computer
,
and click
Next
.
®
®
Using Microsoft
Windows
XP System Restore
The Microsoft Windows XP operating system provides System Restore to allow you to return your computer
to an earlier operating state (without affecting data files) if changes to the hardware, software, or other
system settings have left the computer in an undesirable operating state. See the Windows Help and
Support Center (see "Finding Information" on page 5) for information about using System Restore.
NOTICE: Make regular backups of your data files. System Restore does not monitor your data files or recover
them.
Creating a Restore Point
1
Click the
Start
button and click
Help and Support
.
2
Click
System Restore
.
3
Follow the instructions on the screen.
Restoring the Computer to an Earlier Operating State
NOTICE: Before you restore the computer to an earlier operating state, save and close any open files and exit any
open programs. Do not alter, open, or delete any files or programs until the system restoration is complete.
1
Click the
Start
button, point to
All Programs
→
Accessories
→
System Tools
, and then click
System
Restore
.
2
Ensure that
Restore my computer to an earlier time
is selected and click
Next
.
3
Click a calendar date to which you want to restore your computer.
The
Select a Restore Point
screen provides a calendar that allows you to see and select restore points.
All calendar dates with available restore points appear in boldface type.
4
Select a restore point and click
Next
.
If a calendar date has only one restore point, then that restore point is automatically selected. If two
or more restore points are available, click the restore point that you prefer.
30 Quick Reference Guide

5
Click
Next
.
The
Restoration Complete
screen appears after System Restore finishes collecting data and then
the computer restarts.
6
After the computer restarts, click
OK
.
To change the restore point, you can either repeat the steps using a different restore point, or you can undo
the restoration.
Undoing the Last System Restore
NOTICE: Before you undo the last system restore, save and close all open files and exit any open programs.
Do not alter, open, or delete any files or programs until the system restoration is complete.
1
Click the
Start
button, point to
All Programs
→
Accessories
→
System Tools
, and then click
System
Restore
.
2
Click
Undo my last restoration
and click
Next
.
3
Click
Next
.
The
System Restore
screen appears and the computer restarts.
4
After the computer restarts, click
OK
.
Enabling System Restore
If you reinstall Windows XP with less than 200 MB of free hard-disk space available, System Restore is
automatically disabled. To see if System Restore is enabled:
1
Click the
Start
button and click
Control
Panel
.
2
Click
Performance and Maintenance
.
3
Click
System
.
4
Click the
System Restore
tab.
5
Ensure that
Turn off System Restore
is unchecked.
Using the Last Known Good Configuration
1
Restart your computer and press <F8> when the message
Please select the operating
system to start
appears.
2
Highlight
Last Known Good Configuration
, press <Enter>, press <l>, and then select your
operating system when prompted.
Quick Reference Guide 31

Other Options to Help Resolve Additional Device or Software Conflicts
NOTICE: The following processes erase all of the information on your hard drive.
• Reinstall your operating system using the operating system installation guide and
Operating
System
CD. During the operating system reinstallation, you can select to delete the existing partitions
and reformat your hard drive.
• Reinstall all drivers, beginning with the chipset, using the
Drivers and Utilities
CD
.
Dell Diagnostics
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in "Solving Problems" on page 29 and
run the Dell Diagnostics before you contact Dell for technical assistance.
It is recommended that you print these procedures before you begin.
NOTICE: The Dell Diagnostics works only on Dell computers. Using this program with other computers can cause
incorrect computer responses or result in error messages.
The Dell Diagnostics allow you to:
• Perform quick checks or extensive tests on one or all devices
• Choose how many times a test is run
• Display or print test results or save them in a file
• Suspend testing if an error is detected or terminate testing if a certain number of errors occur
• Access online
Help
screens that describe the tests and how to run them
• Read status messages that tell you whether tests completed successfully
• Receive error messages if problems are detected
Starting the Dell Diagnostics From Your Hard Drive
1
Turn on (or restart) your computer.
2
When the DELL™ logo appears, press <F12> immediately.
NOTE: If you see a message stating that no diagnostics utility partition has been found, see "Starting the Dell
Diagnostics From the Drivers and Utilities CD" on page 33.
If you wait too long and the operating system logo appears, continue to wait until you see the
Microsoft Windows desktop. Then shut down your computer and try again. For more information on
shutting down your computer, see your
User’s Guide.
3
When the boot device list appears, highlight
Boot to Utility Partition
and press <Enter>.
4
When the Dell Diagnostics
Main Menu
appears, select the test you want to run. For more information
on the tests, see your
User’s Guide.
32 Quick Reference Guide

Starting the Dell Diagnostics From the Drivers and Utilities CD
NOTE: The Drivers and Utilities CD is optional and may not ship with all computers.
1
Insert the
Drivers and Utilities
CD.
2
Shut down your computer.
When the DELL logo appears, press <F12> immediately.
If you wait too long and the Windows logo appears, continue to wait until you see the Windows
desktop. Then shut down your computer, and try again.
NOTE: The next steps change the boot sequence for one time only. On the next start-up, the computer boots
according to the devices specified in system setup.
3
When the boot device list appears, highlight
Onboard or USB CD-ROM Drive
and press <Enter>.
4
Select the
Onboard or USB CD-ROM Drive
option from the CD boot menu.
5
Select the
Boot from CD-ROM
option from the menu that appears.
6
Ty p e
1
to start the ResourceCD menu.
7
Select the option to start the Dell Diagnostics and press <Enter>.
8
Select
Run the 32 Bit Dell Diagnostics
from the numbered list. If multiple versions are listed,
select the version appropriate for your computer.
9
When the Dell Diagnostics
Main Menu
appears, select the test that you want to run.
Before you start testing
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
• Turn on your printer if one is attached.
• Enter system setup, review your computer’s configuration information, and enable all of your
computer’s components and devices, such as connectors.
Beep Codes
Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems.
This series of beeps, called a beep code, identifies a problem. One possible beep code (code 1-3-1) consists
of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer
encountered a memory problem.
If your computer beeps during start-up:
1
Write down the beep code on the "Diagnostics Checklist" in your
User’s Guide
.
2
Run the Dell Diagnostics to identify a more serious cause.
3
Contact Dell for technical assistance.
Quick Reference Guide 33

Code Cause
1-1-2 Microprocessor register failure
1-1-3 NVRAM read/write failure
1-1-4 ROM BIOS checksum failure
1-2-1 Programmable interval timer failure
1-2-2 DMA initialization failure
1-2-3 DMA page register read/write failure
1-3 Video Memory Test failure
1-3-1 through 2-4-4 Memory not being properly identified or used
1-3-2 Memory problem
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register failure
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 NVRAM power loss
3-3-2 Invalid NVRAM configuration
3-3-4 Video Memory Test failure
3-4-1 Screen initialization failure
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
4-2-1 No timer tick
4-2-2 Shutdown failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-1 Memory failure above address 0FFFFh
4-3-3 Timer-chip counter 2 failure
4-3-4 Time-of-day clock stopped
4-4-1 Serial or parallel port test failure
4-4-2 Failure to decompress code to shadowed memory
34 Quick Reference Guide

Code Cause
4-4-3 Math-coprocessor test failure
4-4-4 Cache test failure
Error Messages
NOTE: If the message is not listed, see the documentation for either the operating system or the program that was
running when the message appeared.
If an error occurs during start-up, a message may be displayed on the monitor identifying the problem.
See "Error Messages" in the
User’s Guide
for suggestions on resolving any problems.
Diagnostic Lights
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front.
The lights can be "off" or green. When the computer starts normally, the lights flash. If the computer
malfunctions, the pattern of the lights and also that of the power button help to identify the problem.
These lights also indicate sleep states.
Diagnostic Light Codes Before POST
Diagnostic Lights Power
Problem Description Suggested Resolution
Light
off No electrical power is
Connect the computer to an electrical outlet.
supplied to the computer.
Ensure that the front-panel power light is on. If
the power light is off, ensure that the computer
is connected to a working electrical outlet and
then press the power button.
If the problem is still not resolved, contact Dell
for technical assistance.
off The computer is in a normal
Press the power button to turn the computer
off condition; the computer is
on.
connected to an electrical
If the computer does not turn on, ensure that
outlet.
the front-panel power light is on. If the power
light is off, ensure that the computer is
connected to a working electrical outlet and
then press the power button.
If the problem is still not resolved, contact Dell
for technical assistance.
Quick Reference Guide 35

Diagnostic Lights Power
Problem Description Suggested Resolution
Light
blinking
The computer is in a reduced
Use one of the appropriate methods to "wake
green
power or "sleep" state.
up" the computer. See "Advanced Features" in
your User’s Guide.
If the problem is not resolved and you are trying
to wake the computer with a USB mouse or
keyboard, substitute the mouse or keyboard
with a working PS/2 mouse or keyboard and
then try to wake the computer.
blinking
The computer is in a reduced
Use one of the appropriate methods to "wake
green
power or "sleep" state.
up" the computer. See "Advanced Features" in
your User’s Guide.
If the problem is not resolved and you are trying
to wake the computer with a USB mouse or
keyboard, substitute the mouse or keyboard
with a working PS/2 mouse or keyboard and
then try to wake the computer.
amber The BIOS is not executing. Ensure that the processor is seated correctly and
restart the computer. See "Processor" in your
User’s Guide.
(blinking)
If the problem is still not resolved, contact Dell
for technical assistance.
blinking
A possible power supply
Perform the procedure in "Power Problems"
amber
or power cable failure has
in your User’s Guide.
occurred.
If the problem is still not resolved, contact Dell
(blinking)
for technical assistance.
amber A possible system board
Contact Dell for technical assistance.
failure has occurred.
(blinking)
amber A processor mismatch exists. Perform the procedure in "Processor Problems"
in your User’s Guide.
(blinking)
amber A possible failure has been
Verify that any required power cables are
detected in a plug-in
connected to the memory and graphics riser
component such as a graphics
cards.
(blinking)
riser card or memory riser
Perform the procedure in "Power Problems"
card.
in your User’s Guide.
36 Quick Reference Guide

Diagnostic Lights Power
Problem Description Suggested Resolution
Light
amber A possible power supply
Verify that both power supply cables are
failure has occurred.
plugged in to the motherboard.
(blinking)
Diagnostic Light Codes During POST
The power light displays a solid green for diagnostic light codes during POST.
Light Pattern Problem Description Suggested Resolution
A possible processor failure
Reinstall the processor and restart
has occurred.
the computer.
A possible expansion card failure
1
Determine if a conflict exists by
has occurred.
removing a card (not the graphics
card) and then restarting the
computer.
2
If the problem persists, reinstall the
card that you removed, remove a
different card, and then restart the
computer.
3
Repeat this process for each card.
If the computer starts normally,
troubleshoot the last card removed
from the computer for resource
conflicts (see "Resolving Software
and Hardware Incompatibilities"
on page 30).
4
Move each card one at a time to
a different PCI slot and restart
the computer after each move.
5
If the problem persists, contact Dell
.
Quick Reference Guide 37

Light Pattern Problem Description Suggested Resolution
A possible graphics card failure
1
If the computer has a graphics card,
has occurred.
remove the card, reinstall it, and then
restart the computer.
2
If the problem still exists, install a
graphics card that you know works
and restart the computer.
3
If the problem persists or the
computer has integrated graphics,
contact Dell
.
A possible floppy or hard drive failure
Reseat all power and data cables and
has occurred.
restart the computer.
A possible USB failure has occurred. Reinstall all USB devices, check cable
connections, and then restart the
computer.
38 Quick Reference Guide

Light Pattern Problem Description Suggested Resolution
No memory modules are detected. 1
Reseat the memory modules to ensure
that your computer is successfully
communicating with the memory.
2
Restart the computer.
3
If the problem still exists, remove all
the memory modules and install one
memory module in memory module
connector DIMM_1.
4
Restart the computer.
A message appears stating that
because your memory is not paired,
the system will operate with reduced
performance and reduced error-
correction capability
5
Press <F1> to boot to the operating
system.
6
Run the Dell Diagnostics. See your
User’s Guide
for more information.
7
If the memory module passes, shut
down the computer, remove the
memory module, and then repeat the
process with the remaining memory
modules until a memory error occurs
during start-up or diagnostic testing.
If the first memory module tested is
defective, repeat the process with the
remaining modules to ensure that the
remaining modules are not defective.
8
When the defective memory module
is identified, contact Dell for a
replacement
.
Quick Reference Guide 39

Light Pattern Problem Description Suggested Resolution
No memory modules are detected.
• If you have one memory module
installed, reinstall it and restart the
computer.
• If you have two or more memory
modules installed, remove the
modules, reinstall one module, and
then restart the computer). If the
computer starts normally, reinstall an
additional module. Continue until
you have identified a faulty module or
reinstalled all modules without error.
• If available, install properly working
memory of the same type into your
computer.
• If the problem persists, contact Dell.
System board failure has occurred.
Contact Dell
for technical assistance
.
Memory modules are detected, but a
• Ensure that no special memory
memory configuration or compatibility
module/memory connector placement
error exists.
requirements exist.
• Verify that the memory modules that
you are installing are compatible with
your computer.
• Reinstall the memory modules and
restart the computer.
• If the problem persists, contact Dell.
Routine system activity preceding video
Watch your monitor for on-screen
initialization.
messages.
40 Quick Reference Guide

