Dell OptiPlex K7821 User manual

Dell™ OptiPlex™ GX280
Quick Reference Guide
Models DHP, DHS, DCNE, DHM, DCSM

Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.
If you purchased a Dell™ n Series computer, any references in this document to Microsoft
®
Windows
®
operating systems are not applicable.
The
Quick Reference Guide , Drivers and Utilities CD, and operating system media are optional and may not ship
with all computers.
____________________
Information in this document is subject to change without notice.
© 2004 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, OptiPlex, and the DELL logo are trademarks of Dell Inc.; Microsoft and Windows are registered trademarks
of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products.
Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Models DHP, DHS, DCNE, DHM, DCSM
September 2004 P/N K7821 Rev. A00

Contents 3
Contents
Finding Information for Your Computer . . . . . . . . . . . . . . . . . . . 5
Front and Back Views . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Small Form-Factor Computer. . . . . . . . . . . . . . . . . . . . . . 7
Small Desktop Computer . . . . . . . . . . . . . . . . . . . . . . . 8
Desktop Computer . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Small Mini-Tower Computer . . . . . . . . . . . . . . . . . . . . . . 10
Mini-Tower Computer . . . . . . . . . . . . . . . . . . . . . . . . . 12
Opening the Computer Cover . . . . . . . . . . . . . . . . . . . . . . . . 13
Small Form-Factor, Small Desktop, and Small Mini-Tower
Computers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Desktop and Mini-Tower Computers . . . . . . . . . . . . . . . . . . 13
Inside Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Small Form-factor Computer . . . . . . . . . . . . . . . . . . . . . . 14
Small Desktop Computer . . . . . . . . . . . . . . . . . . . . . . . 14
Desktop Computer . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Small Mini-Tower Computer . . . . . . . . . . . . . . . . . . . . . . 15
Mini-Tower Computer . . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting Up Your Computer . . . . . . . . . . . . . . . . . . . . . . . . . 16
Solving Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dell Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
System Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Diagnostic Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Beep Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Running the Dell™ IDE Hard Drive Diagnostics . . . . . . . . . . . . . 27
Resolving Software and Hardware Incompatibilities . . . . . . . . . . 27
Using Microsoft®Windows®XP System Restore . . . . . . . . . . . . 28
Reinstalling Microsoft®Windows®XP . . . . . . . . . . . . . . . . . 30
Using the Drivers and Utilities CD . . . . . . . . . . . . . . . . . . . . . 32
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4Contents

Quick Reference Guide 5
Finding Information for Your Computer
What Are You Looking For? Find It Here
• A diagnostic program for my computer
• Drivers for my computer
• My computer documentation
• My device documentation
• Desktop System Software (DSS)
Drivers and Utilities CD (also known as the ResourceCD)
Documentation and drivers are already
installed on your computer. You can use the
CD to reinstall drivers, run the Dell
Diagnostics, or access your documentation.
NOTE: The Drivers and Utilities CD is optional
and may not ship with all computers.
Readme files may be included on your CD
to provide last-minute updates about
technical changes to your computer or advanced technical-reference
material for technicians or experienced users.
• Operating system updates and patches Desktop System Software (DSS)
Located on the Drivers and Utilities CD and the Dell Support website
at
support.dell.com .
• Terms and Conditions
• Warranty information
• Safety instructions
• Regulatory information
• Ergonomics information
• End User License Agreement
Product Information Guide
• How to remove and replace parts
• Technical specifications
• How to configure system settings
• How to troubleshoot and solve problems
Dell™ OptiPlex™ User’s Guide
Microsoft®Windows®XP Help and Support Center
1 Click the Start button and click Help and Support.
2 Click User’s and system guides and click User’s guides .
• Service Tag and Express Service Code
• Microsoft Windows License Label
Service Tag and Microsoft Windows License
These labels are located on your computer.
• Use the Service Tag to identify your computer
when you use
support.dell.com or contact
technical support.
• Enter the Express Service Code to direct your call when contacting
technical support. The Express Service Code is not available in all
countries.

6Quick Reference Guide
www.dell.com | support.dell.com
• Latest drivers for my computer
• Answers to technical service and support
questions
• Online discussions with other users and
technical support
• Documentation for my computer
Dell Support Website — support.dell.com
NOTE: Select your region to view the appropriate support site.
The Dell Support website provides several online tools, including:
• Troubleshooting — Hints and tips, articles from technicians, and online
courses
• Upgrades — Upgrade information for components, such as memory, the
hard drive, and the operating system
• Services and Warranties — Contact information, order status, warranty,
and repair information
• Downloads — Drivers, patches, and software updates
• User Guides — Computer documentation and product specifications
• Service call status and support history
• Top technical issues for my computer
• Frequently asked questions
• File downloads
• Details on my computer configuration
• Service contract for my computer
Dell Premier Support Website — premiersupport.dell.com
The Dell Premier Support website is customized for corporate, government,
and education customers. This website may not be available in all regions.
• How to use Windows XP
• Documentation for my computer
• Documentation for devices (such as a
modem)
Windows Help and Support Center
1 Click the Start button and click Help and Support .
2 Type a word or phrase that describes your problem and click the arrow icon.
3 Click the topic that describes your problem.
4 Follow the instructions on the screen.
• How to reinstall my operating system
Operating System CD
The operating system is already installed on your computer. To reinstall
your operating system, use the Operating System CD. See your OptiPlex
User’s Guide for instructions.
NOTE: The operating system media is optional and may not ship with all
computers.
After you reinstall your operating system, use the
Drivers and Utilities CD (optional) to reinstall
drivers for the devices that came with your
computer.
Your operating system product key label is located
on your computer.
NOTE: The color of your CD varies based on the
operating system you ordered.
• Regulatory model information and chassis
type
• DHP — Small form-factor chassis
• DHS — Small desktop chassis
• DCSM — Desktop chassis
• DHM — Small mini-tower chassis
• DCNE — Mini-Tower chassis
What Are You Looking For? Find It Here

Quick Reference Guide 7
Front and Back Views
Small Form-Factor Computer
USB 2.0
connectors (2)
CD/DVD-drive activity light
floppy-drive eject button
power button
power light
headphone
connector
hard-drive activity light
Microsoft
Windows
Product Key
CD/DVD-drive eject button
card slots (2)
diagnostic lights
power
connector
serial connector USB 2.0 connectors (6)
microphone connector
network activity light
link integrity light
network adapter connector
video connector
line-in connector
parallel connector
line-out connector

8Quick Reference Guide
www.dell.com | support.dell.com
Small Desktop Computer
power light
Microsoft
Windows
Product Key
floppy-drive eject button
floppy-drive activity light
hard-drive activity light
power button
front panel door
headphone connector
USB 2.0 connectors (2)
CD/DVD-drive
eject button
front panel door
card slots (2)
diagnostic lights (4)
power
connector
serial connector
USB 2.0
connectors (6)
microphone
connector
network activity light
link integrity light
network adapter connector
video connector
line-in connector
parallel connector
line-out connector

Quick Reference Guide 9
Desktop Computer
USB 2.0 connectors (2)
Microsoft
Windows
Product Key
CD/DVD-drive eject button
floppy-drive
eject button
power button
power light
diagnostic lights
headphone connector
microphone
connector
card
slots (3)
power
connector
serial connector USB 2.0 connectors (6)
microphone connector
network activity light
link integrity light
network adapter connector
video connector
line-in connector
parallel connector
line-out connector
voltage selection switch

10 Quick Reference Guide
www.dell.com | support.dell.com
Small Mini-Tower Computer
hard-drive activity light
Microsoft
Windows
Product Key
CD/DVD-drive eject button
floppy-drive eject button
headphone
connector
front-panel door
NOTE: See "Small Mini-
Tower Computer —
Front-Panel Door and
Hinge Arms" on page 11
for more information.
power light
USB 2.0 connectors (2)
floppy-drive
activity light
power button
voltage selection switch
power connector
card slots (5)
video connector
microphone connector
line-out connector
serial connector
parallel connector
diagnostic lights
network adapter connector
link integrity light
network activity light
front panel door
USB 2.0 connectors (6)
line-in connector

Quick Reference Guide 11
Small Mini-Tower Computer — Front-Panel Door and Hinge Arms
To prevent damage to your computer, the front-panel door is designed to "break away" if it is lifted
up or pushed down too far.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
To reattach the front-panel door:
To reattach the hinge arms, first remove the front-panel door by gently snapping it off the two
hinge arms:
1. Lower the two hinge
arms to the vertical.
position
2. Align the two clips on
the front-panel door with
the hinge arms, and
press inward.
1. Use your fingers
to pull here to
remove the front-
panel insert.
2. Lift both
hinge arms to
a horizontal
position.
pivot bar
3. Look through the two view
slots and align the pivot bar
with the two pivot-bar slots.
pivot-bar slot

12 Quick Reference Guide
www.dell.com | support.dell.com
Mini-Tower Computer
power light
USB 2.0 connectors (2)
power button
Microsoft Windows
Product Key
CD/DVD-drive eject button
floppy-drive eject button
microphone
connector
voltage selection switch
power connector
serial connector
parallel connector video connector
link integrity light
line-out connector
headphone
connector
network adapter connector
network activity light
line-in connector
microphone connector
card slots (4)
USB 2.0 connectors (6)
diagnostic
lights

Quick Reference Guide 13
Opening 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 opening the cover.
Before opening the cover, remove the lock if a lock is installed on the back of the computer.
Small Form-Factor, Small Desktop, and Small Mini-Tower Computers
NOTICE: Ensure that there is sufficient space to support the open cover—at least 30 cm (1 ft) of desk top
space.
1
Remove the computer stand, if one is attached.
2 Locate the two release buttons shown in the figure. Then press
the
two release buttons as you lift the cover.
NOTICE: Open the cover slowly to ensure that you do not damage any
cables.
3
Raise the back of the cover, and pivot it toward the front of the
computer.
NOTE: When opening the small mini-tower computer, first press
the release button on the right side of the computer with one hand
while pulling up on the top of the cover with the other hand, and
then press the release button on the left side of the computer with
one hand while pulling up on the top of the cover with the other
hand.
Desktop and Mini-Tower Computers
Locate the cover release lever on the back of the computer, and
press the lever to release the cover.

14 Quick Reference Guide
www.dell.com | support.dell.com
Inside Your Computer
Small Form-factor Computer
Small Desktop Computer
power supply
heat sink and blower
assembly
padlock ring
hard drive
floppy drive CD/DVD drive
internal speaker
chassis intrusion
switch
SATA connector
system board
PCI-E x16
connector
hard drive
chassis intrusion switch
internal speaker
SATA connector(s) (2)
NOTE: Your computer may
not have the SATA1
connector.
power supply
card cage
PCI-E x1
connector
heat sink and blower
assembly
system board
floppy drive
CD/DVD drive
PCI-E x16
connector

Quick Reference Guide 15
Desktop Computer
Small Mini-Tower Computer
CD/DVD, floppy,
and hard drive
(stacked)
power supply
SATA connectors (2)
chassis intrusion switch
heat sink shroud
assembly
system board
PCI-E x16 connecto
r
hard drive
floppy drive
chassis intrusion switch
CD/DVD drive
power supply
heat sink shroud
assembly
padlock ring
PCI-E x16
connector
PCI-E x1
connector system board
internal speaker
SATA connectors (4)
NOTE: Your computer may not
have the SATA1 or SATA3
connectors.

16 Quick Reference Guide
www.dell.com | support.dell.com
Mini-Tower Computer
Setting Up Your Computer
CAUTION: Before performing any of the procedures in this section, follow the safety instructions in
Product Information Guide.
NOTICE: If your computer has an expansion card installed (such as a modem card), connect the
appropriate cable to the card, not to the connector on the back panel.
You must complete all the steps to properly set up your computer. See the appropriate figures that
follow the instructions.
1 Connect the keyboard and mouse.
NOTICE: Do not attempt to operate a PS/2 mouse and a USB mouse simultaneously.
2
Connect the modem or network cable.
Insert the network cable, not the telephone line, into the network connector. If you have an
optional modem, connect the telephone line to the modem.
NOTICE: Do not connect a modem cable to the network adapter. Voltage from telephone
communications can cause damage to the network adapter.
CD/DVD drive
power supply
system board
chassis intrusion switch
hard drive
floppy drive
heat sink shroud
assembly
SATA connectors (2)
PCI-E x16 connector

Quick Reference Guide 17
3 Connect the monitor.
Align and gently insert the monitor cable to avoid bending connector pins. Tighten the
thumbscrews on the cable connectors.
NOTE: Some monitors have the video connector underneath the back of the screen. See the
documentation that came with your monitor for its connector locations.
4
Connect the speakers.
5 Connect power cables to the computer, monitor, and devices and insert the other ends of the
power cables to electrical outlets.
6 Verify that the voltage selection switch is set correctly for your location.
Your computer has a manual voltage selection switch. Computers with a voltage selection
switch on the back panel must be manually set to operate at the correct operating voltage.
NOTICE: To help avoid damaging a computer with a manual voltage selection switch, set the switch for
the voltage that most closely matches the AC power available in your location.
NOTE: Before you install any devices or software that did not ship with your computer, read the
documentation that came with the device or software, or contact the vendor to verify that the device or
software is compatible with your computer and operating system.
NOTE: Your computer may vary slightly from the following setup figures.
Set Up Your Keyboard and Mouse

18 Quick Reference Guide
www.dell.com | support.dell.com
Set Up Your Monitor
Power Connections

Quick Reference Guide 19
Solving Problems
Dell provides a number of tools to help you if your computer does not perform as expected. For the
latest troubleshooting information available for your computer, see the Dell Support website at
support.dell.com .
If computer problems occur that require help from Dell, write a detailed description of the error,
beep codes, or diagnostics light patterns; record your Express Service Code and Service Tag below;
and then contact Dell from the same location as your computer.
See "Finding Information for Your Computer" on page 5 for an example of the Express Service
Code and Service Tag.
Express Service Code:___________________________
Service Tag:___________________________
Dell Diagnostics
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
NOTE: The Drivers and Utilities CD (ResourceCD) is optional and therefore may not ship with all
computers.
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in "Solving Problems" of your
online
User’s Guide and run the Dell Diagnostics before you contact Dell for technical assistance.
NOTICE: The Dell Diagnostics works only on Dell™ computers.
Enter system setup, review your computer’s configuration information, and ensure that the device
you want to test displays in system setup and is active.
Start the Dell Diagnostics from either your hard drive or from the optional
Drivers and Utilities CD
(also known as the ResourceCD).
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, run the Dell
Diagnostics from your Drivers and Utilities CD (optional).
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.
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.

20 Quick Reference Guide
www.dell.com | support.dell.com
Starting the Dell Diagnostics From the Drivers and Utilities CD
NOTE: The Drivers and Utilities CD (ResourceCD) is optional and therefore may not ship with all
computers.
1
Insert the Drivers and Utilities CD.
2 Shut down and restart the 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 IDE CD-ROM Device and press <Enter>.
4 Select the IDE CD-ROM Device option from the CD boot menu.
5 Select the Boot from CD-ROM option from the menu that appears.
6 Type 1 to start the ResourceCD menu.
7 Type 2 to start the Dell Diagnostics.
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 you want to run.
Dell Diagnostics Main Menu
1 After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the
option you want.
2 If a problem is encountered during a test, a message appears with an error code and a
description of the problem. Write down the error code and problem description and follow
the instructions on the screen.
If you cannot resolve the error condition, contact Dell.
Option Function
Express Test Performs a quick test of devices. This test typically takes 10 to 20 minutes and
requires no interaction on your part. Run Express Test first to increase the
possibility of tracing the problem quickly.
Extended Test Performs a thorough check of devices. This test typically takes an hour or more
and requires you to answer questions periodically.
Custom Test Tests a specific device. You can customize the tests you want to run.
Symptom Tree Lists the most common symptoms encountered and allows you to select a test
based on the symptom of the problem you are having.