Dell™ OptiPlex™ GX620 Systems User's Guide


Small Form Factor 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

Small Form Factor Computer

About Your Small Form Factor Computer

Inside Your Computer

Small Form Factor Computer Specifications

Removing the Computer Cover

I/O Panel


PCI and PCI Express Cards and Serial Port Adapters


Advanced Features

LegacySelect Technology Control



Password Protection

System Setup

Booting to a USB Device

Clearing Forgotten Passwords

Clearing CMOS Settings


Power Management


Replacing the Battery

Replacing the System Board


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


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


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


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.