Dell WHL, U7021

Solving Problems 51

ADJUST THE WINDOWS DISPLAY SETTINGS —

Click the

Start

button, click

Control Panel

, and then click

Appearance and Themes

Click

Display

and click the

Settings

tab.

Try different settings for

Screen resolution

and

Color quality.

Contents

Main www.dell.com | support.dell.com Dell Dimension XPS Notes, Notices, and Cautions Contents 1 Setting Up and Using Your Computer 2 Optimizing Performance 3 Solving Problems 4 Advanced Troubleshooting 5 Removing and Installing Parts 6 Appendix Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Finding Information NOTE: 10 NOTE: Page Page Changing the Front-Panel Light Color Connecting Two Monitors Connecting Two Monitors With VGA Connectors Connecting One Monitor With a VGA connector and One Monitor With a DVI Connector Connecting a TV Changing the Display Settings About Serial ATA Drives About Your RAID Configuration RAID Level 0 RAID Level 1 Configuring Your Computer for RAID Configuring for RAID Using the Intel(R) Option ROM Utility Configuring for RAID Using the Intel(R) Application Accelerator Page Page Page Transferring Information to a New Computer Playing CDs and Movies Playing a CD or DVD Page Adjusting the Volume Adjusting the Picture Copying CDs and DVDs How to Copy a CD or DVD Using Blank CD-Rs, CD-RWs, DVD+Rs, and DVD+RWs Helpful Tips Network Setup Wizard Power Management Overview Standby Mode Hibernate Mode Power Options Properties Page Page Optimizing Performance Hyper-Threading Overclocking PCI Express Cards Solving Problems Troubleshooting Tips Battery Problems Drive Problems 38 CD and DVD drive problems Problems writing to a CD/DVD-RW drive Hard drive problems E-Mail, Modem, and Internet Problems 40 Error Messages IEEE 1394 Device Problems Keyboard Problems 42 Lockups and Software Problems The computer does not start up A program stops responding The computer stops responding A program crashes repeatedly A program is designed for an earlier Windows operating system A solid blue screen appears Other software problems Memory Problems Mouse Problems Network Problems Power Problems Printer Problems CAUTION: Scanner Problems 48 Sound and Speaker Problems No sound from speakers No sound from headphones Video and Monitor Problems If the screen is blank If the screen is difficult to read Page Page Advanced Troubleshooting Diagnostic Lights 54 = yellow = green = off Dell Diagnostics When to Use the Dell Diagnostics Page Page Drivers What Is a Driver? Identifying Drivers Reinstalling Drivers Using Microsoft Windows XP System Restore Creating a Restore Point Restoring the Computer to an Earlier Operating State Undoing the Last System Restore Using Dell PC Restore by Symantec Resolving Software and Hardware Incompatibilities Reinstalling Microsoft Windows XP Before You Begin Reinstalling Windows XP Page Removing and Installing Parts Before You Begin Recommended Tools Turning Off Your Computer Before Working Inside Your Computer Front and Back View of the Computer Front View NOTE: Front View (Doors Open) Back View NOTE: 72 NOTE: NOTE: Opening the Computer Cover Inside View of Your Computer System Board Components Memory Installing Memory Page Removing Memory Cards PCI Cards Page Page PCI Express Cards Page Page Page Page Drives General Installation Guidelines Connecting Drive Cables Hard Drive Removing a Hard Drive Installing a Hard Drive Page Page Adding a Second Hard Drive Floppy Drive Removing a Floppy Drive Installing a Floppy Drive Page CD/DVD Drive Removing a CD/DVD Drive Installing a CD/DVD Drive Page Page Processor Airflow Shroud Removing the Processor Airflow Shroud Installing the Processor Airflow Shroud Processor Removing the Processor Page Page Installing the Processor Page Front Panel Removing the Front Panel Page Drive Door Removing the Drive Door Replacing the Drive Door Page Battery Replacing the Battery Closing the Computer Cover Appendix Specifications NOTE: Page Page Page System Setup Overview Entering System Setup System Setup Options System NOTE: Drives Onboard Devices 122 Video Performance NOTE: Power Management NOTE: Maintenance POST Behavior Boot Sequence Page Clearing Forgotten Passwords Clearing CMOS Settings Cleaning Your Computer Computer, Keyboard, and Monitor Mouse Floppy Drive CDs and DVDs Dell Technical Support Policy (U.S. Only) Definition of "Dell-Installed" Software and Peripherals Definition of "Third-Party" Software and Peripherals FCC Notices (U.S. Only) Class A Class B FCC Identification Information Contacting Dell Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Index A B C D E F H I K L M N O R S T U V W