Dell OptiPlex 755 User manual

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Dell™ OptiPlex™ 755
Quick Reference Guide
Models DCTR, DCNE, DCSM, and DCCY

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.
____________________
Information in this document is subject to change without notice.
© 2007 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, the DELL logo, OptiPlex, Inspiron, Dimension, Latitude, Dell
Precision, DellNet, TravelLite, OpenManage, PowerVault, Axim, PowerEdge, PowerConnect,
PowerApp, and StrikeZone are trademarks of Dell Inc.; Intel, Pentium, SpeedStep, and Celeron are
registered trademarks and Core and vPro are trademarks of Intel Corporation in the U.S and other
countries;Microsoft,MS-DOS,Windows,WindowsVista,andtheWindowsVistaStartButtonareeither
registered trademarks or trademarks of Microsoft Corporation in the United States and/or other
countries; IBM is a registered trademark of International Business Machines Corporation; Bluetooth
is a trademark owned by Bluetooth SIG, Inc. and is used by Dell Inc. under license. ENERGY STAR
isaregisteredtrademarkoftheU.S.EnvironmentalProtectionAgency.AsanENERGYSTARpartner,
Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.
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: DCTR, DCNE, DCSM, and DCCY
July 2007 FN390 Rev. A00

Contents 3
Contents
Finding Information . . . . . . . . . . . . . . . . . . . . 5
Setting Up Your Computer . . . . . . . . . . . . . . . . 10
Set Up Your Keyboard and Mouse . . . . . . . . . 11
Set Up Your Monitor . . . . . . . . . . . . . . . . 12
Power Connections . . . . . . . . . . . . . . . . 12
Before You Begin . . . . . . . . . . . . . . . . . . . . 13
Recommended Tools . . . . . . . . . . . . . . . . 13
Turning Off Your Computer . . . . . . . . . . . . . 13
Before Working Inside Your Computer . . . . . . . 14
Mini Tower Computer . . . . . . . . . . . . . . . . . . 16
System Views . . . . . . . . . . . . . . . . . . . . 16
Removing the Computer Cover . . . . . . . . . . . 22
Inside Your Computer . . . . . . . . . . . . . . . 24
System Board Components . . . . . . . . . . . . 25
Jumper Settings . . . . . . . . . . . . . . . . . . 26
Desktop Computer . . . . . . . . . . . . . . . . . . . . 27
System Views . . . . . . . . . . . . . . . . . . . . 27
Removing the Computer Cover . . . . . . . . . . . 32
Inside Your Computer . . . . . . . . . . . . . . . 33
System Board Components . . . . . . . . . . . . 35
Jumper Settings . . . . . . . . . . . . . . . . . . 36
Small Form Factor Computer . . . . . . . . . . . . . . 37
System Views . . . . . . . . . . . . . . . . . . . . 37
Removing the Computer Cover . . . . . . . . . . . 43

4Contents
Inside Your Computer . . . . . . . . . . . . . . . . 44
System Board Components . . . . . . . . . . . . . 46
Jumper Settings . . . . . . . . . . . . . . . . . . 47
Ultra Small Form Factor Computer . . . . . . . . . . . 48
System Views . . . . . . . . . . . . . . . . . . . . 48
Removing the Computer Cover . . . . . . . . . . . 55
Inside Your Computer . . . . . . . . . . . . . . . . 56
Cable Cover (Optional) . . . . . . . . . . . . . . . 57
System Board Components . . . . . . . . . . . . . . . 59
Jumper Settings . . . . . . . . . . . . . . . . . . 60
Solving Problems . . . . . . . . . . . . . . . . . . . . 61
Dell Diagnostics . . . . . . . . . . . . . . . . . . 61
System Lights . . . . . . . . . . . . . . . . . . . . 65
Diagnostic Lights . . . . . . . . . . . . . . . . . . 66
Beep Codes . . . . . . . . . . . . . . . . . . . . . 70
Resolving Software and Hardware
Incompatibilities . . . . . . . . . . . . . . . . . . 72
Restoring Your Operating System . . . . . . . . . 73
Using Microsoft Windows System Restore . . . . 73
Using Dell™ PC Restore and Dell Factory
Image Restore . . . . . . . . . . . . . . . . . . . 75
Using the Drivers and Utilities Media . . . . . . . 78
Reinstalling Drivers and Utilities . . . . . . . . . . 79
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Quick Reference Guide 5
Finding Information
NOTE: Some features or media may be optional and may not ship with your
computer. Some features or media may not be available in certain countries.
NOTE: Additional information may ship with your computer.
What Are You Looking For? Find It Here
• A diagnostic program for my computer
• Drivers for my computer
• Desktop System Software (DSS)
Drivers and Utilities Media
NOTE: The Drivers and Utilities media may
be optional and may not ship with your
computer.
Documentation and drivers are already
installed on your computer. You can use
the media to reinstall drivers (see
"Reinstalling Drivers and Utilities" on
page 79), to run the Dell Diagnostics (see
"Dell Diagnostics" on page 61).
Readme files may be included on your
media to provide last-minute updates
about technical changes to your computer
or advanced technical-reference material
for technicians or experienced users.
NOTE: Drivers and documentation updates
can be found at support.dell.com.