Dell U7021, WHL manual W . d e l l . c o m s u p p o r t . d e l l . c o m

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Dell™ Dimension™ XPS

headphone connector

microphone connector

USB 2.0 connectors (2)

IEEE 1394 connector

serial port

parallel port

keyboard connector

USB 2.0 connectors (6)

VGA video connector

PCI card (4), PCI Express x1 card (1), PCI Express x16 card (1) slots

fans (2)

fans (2)

diagnostic lights

mouse connector

cover latch release

network adapter connector

TV-OUT connector*

DVI video connector

sound card connectors

security cable slot

padlock ring

modem connector

power connector

*Not present on all computers.

Model WHL

w w w . d e l l . c o m s u p p o r t . d e l l . c o m

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Contents W . d e l l . c o m s u p p o r t . d e l l . c o m March U7021 Contents Optimizing Performance Restoring the Computer to an Earlier Operating State Using Microsoft Windows XP System RestoreResolving Software and Hardware Incompatibilities 102 Removing and Installing Parts108 106109 110131 130Finding Information Dell Product Information Guide Setup Diagram Specifications, and white papers Warranty, and repair informationHow to use Windows XP Click the topic that describes your problemFinding Information Opening the Drive Door Setting Up and Using Your ComputerBadge Changing the Front-Panel Light ColorConnecting Two Monitors With VGA Connectors Connecting Two MonitorsTV-OUT connector VGA blue connector Connecting a TVOptional DVI adapter Changing the Display Settings About Your RAID ConfigurationAbout Serial ATA Drives Segment RAID LevelHard drive Setting Your Computer to RAID-Enabled Mode Configuring Your Computer for RAIDCreating a RAID Level 0 Configuration Configuring for RAID Using the IntelR Option ROM UtilityCreating a RAID Level 1 Configuration Deleting a RAID Volume Creating a RAID 1 Volume Creating a RAID 0 VolumeMigrating to a RAID 0 Volume On the Delete RAID Volume Wizard screen, click NextClick Reset Hard Drive to Non-RAID Migrating to a RAID 1 VolumeCreating a Spare Hard Drive To Mark a Drive as a Spare Hard DriveTransferring Information to a New Computer Rebuilding a Degraded RAID 1 VolumePlaying a CD or DVD Playing CDs and MoviesNext DVD player includes the following basic buttons Adjusting the Picture Adjusting the VolumeCopying CDs and DVDs Go to the previous title or chapter EjectUsing Blank CD-Rs, CD-RWs, DVD+Rs, and DVD+RWs How to Copy a CD or DVDClick Exact Copy Click Checklist for creating a network Network Setup WizardHelpful Tips Standby Mode Power ManagementHibernate Mode OverviewPower Schemes Tab Power Options PropertiesHibernate Tab Advanced TabSetting Up and Using Your Computer Overclocking Hyper-ThreadingClick Hardware and click Device Manager Optimizing PerformancePCI Express Cards Battery Problems Troubleshooting TipsDrive Problems Solving ProblemsProblems writing to a CD/DVD-RW drive CD and DVD drive problemsHard drive problems Mail, Modem, and Internet ProblemsUse these characters in filenames Error MessagesKeyboard Problems Ieee 1394 Device ProblemsComputer does not start up Lockups and Software ProblemsComputer stops responding Program stops respondingProgram crashes repeatedly Other software problemsProgram is designed for an earlier Windows operating system Solid blue screen appearsMouse Problems Memory ProblemsNetwork Problems Power Problems Scanner Problems Printer ProblemsNo sound from speakers Sound and Speaker ProblemsN T H E S P E a K E R D I a G N O S T I C S No sound from headphonesIf the screen is blank Video and Monitor ProblemsIf the screen is difficult to read J U S T T H E W I N D O W S D I S P L a Y S E T T I N G S Solving Problems Electrical outlet and press the power Diagnostic LightsAdvanced Troubleshooting Has occurred ButtonIdentified a faulty module or Normally, reinstall an additionalIf available, install properly working If the problem persists, contact DellYour computer see Error exists Requirements exist seeDetermine if a conflict exists by OccurredWhen to Use the Dell Diagnostics Dell DiagnosticsHard drive, CD drive, and DVD Drive seeStarting the Dell Diagnostics From the ResourceCD Starting the Dell Diagnostics From Your Hard DriveDell Diagnostics Main Menu Drivers What Is a Driver?Identifying Drivers Using Windows XP Device Driver Rollback Reinstalling DriversUsing the ResourceCD Windows XPManually Reinstalling Drivers Using Microsoft Windows XP System RestoreUndoing the Last System Restore Creating a Restore PointRestoring the Computer to an Earlier Operating State Enabling System Restore Using Dell PC Restore by SymantecResolving Software and Hardware Incompatibilities Reinstalling Microsoft Windows XPBefore You Begin Booting From the Operating System CD Reinstalling Windows XPWindows XP Setup When the Welcome to Microsoft screen appears, click Next Before You Begin Removing and Installing PartsRecommended Tools Turning Off Your ComputerBefore Working Inside Your Computer Front and Back View of the Computer Open the door to use the front-panel connectorsFront View Press to turn on the computerFront View Doors Open Back View One x16 slot and one x1 slot Opening the Computer Cover System board Power supply Removing and Installing Parts Processor fan Power supply fansInside View of Your Computer Floppy drive CD/DVD driveSystem Board Components DDR2 Memory Overview MemoryAddressing Memory With 4-GB Configurations Installing MemoryNotch Memory module Cutouts Crossbar Securing clips ConnectorRemoving Memory CardsPCI Cards Installing a PCI CardNot fully seated card Fully seated card Retention arm Alignment guide Alignment bar Filler bracket Removing a PCI CardPCI Express PCI Express CardsCard PCI Express Card slotTab Installing a PCI Express CardNot fully seated card Fully seated card Retention arm Alignment guide Alignment bar Filler bracket Removing a PCI Express Card Drives General Installation GuidelinesFloppy drive CD/DVD drives Hard drives Drive Interface Connectors Connecting Drive CablesSerial ATA Connector Interface cable Interface connector Power cable Power Cable ConnectorHard Drive Removing a Hard DriveDrive Bracket rails Screws Removing and Installing Parts Installing a Hard DriveHard-drive cable Power cable Tabs Removing and Installing Parts Adding a Second Hard Drive Rail tabs Floppy DriveFirst hard drive in lower bay Hard drive bay Data cable power cable Tabs Floppy drive Installing a Floppy DriveRemoving a Floppy Drive Drive Bracket rails Screws Removing a CD/DVD Drive CD/DVD DrivePower cable Tabs Data cable CD/DVD drive Installing a CD/DVD Drive100 101 Removing the Processor Airflow Shroud Processor Airflow Shroud102 Shroud release lever Anchor tabsProcessor Installing the Processor Airflow ShroudRemoving the Processor 103Anchor tabs Shroud release lever 104105 106 Installing the ProcessorProcessor cover Socket Release lever 107 Removing the Front Panel Front Panel108 109 Replacing the Front PanelRemoving the Drive Door Drive Door110 111 Replacing the Drive DoorTop bracket hinge Bottom bracket hinge Hinge tab Door hinges Door bracket 112Door Replacing the Battery BatteryBattery Battery socket Tab Removing and Installing Parts 113114 Closing the Computer Cover115 SpecificationsExpansion Bus 116Drives 117 ConnectorsCenter/Low Frequency Effects LFE channel two front-panel Controls and Lights118 PowerLocated in the Product Information 119 System SetupEnvironmental 10 to 35C 50 to 95FSystem Setup Screens Entering System Setup120 121 System Setup Options122 123 Option Settings Boot SequenceChanging Boot Sequence for the Current Boot 124125 Changing Boot Sequence for Future Boots126 Clearing Forgotten PasswordsCleaning Your Computer Clearing Cmos SettingsComputer, Keyboard, and Monitor Floppy Drive MouseCDs and DVDs 128Dell Technical Support Policy U.S. Only Definition of Dell-Installed Software and PeripheralsFCC Notices U.S. Only Definition of Third-Party Software and Peripherals130 Class a Class BFCC Identification Information Contacting Dell131 132 133 134 135 136 137 Ireland Sales 138Sales dial within U.K. only Fax/Sales Fax139 140 141 142 143 Switchboard SalesCountries Sales Penang, Malaysia Appendix 144 145 PowerConnect, and PowerVault Transaction SalesTrinidad/Tobago General Support Turks and Caicos Islands 146 147 Appendix Index 149Index 151 Reinstalling Windows XPIndex 153 Wizard, 43 reinstalling, 11, 64 scanner, 48 System Restore154

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