Dell™ OptiPlex™ GX620 Systems User's Guide

Mini Tower Computer

Finding Information Before You Begin Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Chassis Intrusion Switch Removing the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector Mini Tower Computer About Your Mini Tower Computer Inside Your Computer Mini Tower Computer Specifications Removing the Computer Cover I/O Panel Drives PCI and PCI Express Cards and Serial Port Adapters Power Supply Processor Advanced Features LegacySelect Technology Control Manageability Security Password Protection System Setup Booting to a USB Device Clearing Forgotten Passwords Clearing CMOS Settings Hyper-Threading Power Management Battery Replacing the Battery Replacing the System Board Memory DDR2 Memory Overview Addressing Memory With 4-GB Configurations Removing Memory Replacing/Adding Additional Memory

Replacing the Computer Cover Cleaning Your Computer Reinstalling Drivers and the Operating System Drivers Using Microsoft® Windows® XP System Restore Reinstalling Microsoft Windows XP Solving Problems Battery Problems Drive Problems Keyboard Problems Lockups and Software Problems Memory Problems Mouse Problems Network Problems Power Problems Printer Problems Restoring Default Settings Serial or Parallel Device Problems Sound and Speaker Problems Video and Monitor Problems Microsoft® Windows® XP Features Transferring Information to a New Computer User Accounts and Fast User Switching Setting Up a Home and Office Network Glossary Troubleshooting Tools and Utilities Dell Diagnostics System Lights Diagnostic Lights Beep Codes Error Messages Resolving Software and Hardware Incompatibilities Getting Help Technical Assistance Problems With Your Order Product Information Returning Items for Warranty Repair or Credit Before You Call Contacting Dell Warranty FCC Notices (U.S. Only)

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.

Abbreviations and Acronyms

For a complete list of abbreviations and acronyms, see the Glossary.

If you purchased a Dell™ n Series computer, any references in this document to Microsoft^® Windows^® operating systems are not applicable.

Information in this document is subject to change without notice.
© 2005–2006 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, Dell OpenManage, PowerVault, Axim, PowerEdge, PowerConnect, and PowerApp are trademarks of Dell Inc.; Intel, Pentium, and Celeron are registered trademarks of Intel Corporation; Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation; 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 is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, 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.

Model DCTR

August 2006 N8071 Rev. A02