Dell U7021, WHL manual What Is a Driver?, Identifying Drivers

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Tab	Function

Configuration	Displays your hardware configuration for the selected device.
	The Dell Diagnostics obtains configuration information for all
	devices from system setup, memory, and various internal tests,
	and it displays the information in the device list in the left pane
	of the screen. The device list may not display the names of all
	the components installed on your computer or all devices
	attached to your computer.

Parameters	Allows you to customize the test by changing the test settings.

4When the tests are completed, if you are running the Dell Diagnostics from the ResourceCD, remove the CD.

5Close the test screen to return to the Main Menu screen. To exit the Dell Diagnostics and restart the computer, close the Main Menu screen.

Drivers

What Is a Driver?

A driver is a program that controls a device such as a printer, mouse, or keyboard. All devices require a driver program.

A driver acts like a translator between the device and any other programs that use the device. Each device has its own set of specialized commands that only its driver recognizes.

Dell ships your computer to you with required drivers already installed—no further installation or configuration is needed.

NOTICE: The Dell Dimension ResourceCD may contain drivers for operating systems that are not on your computer. Ensure that you are installing software appropriate for your operating system.

Many drivers, such as the keyboard driver, come with your Microsoft® Windows® operating system. You may need to install drivers if you:

•Upgrade your operating system.

•Reinstall your operating system.

•Connect or install a new device.

Identifying Drivers

If you experience a problem with any device, identify whether the driver is the source of your problem and, if necessary, update the driver.

Advanced Troubleshooting

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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 Resolving Software and Hardware Incompatibilities Using Microsoft Windows XP System RestoreRestoring the Computer to an Earlier Operating State 102 Removing and Installing Parts110 106108 109131 130Finding Information Dell Product Information Guide Setup Diagram Click the topic that describes your problem Warranty, and repair informationSpecifications, and white papers How to use Windows XPFinding Information Opening the Drive Door Setting Up and Using Your ComputerBadge Changing the Front-Panel Light ColorConnecting Two Monitors With VGA Connectors Connecting Two MonitorsOptional DVI adapter Connecting a TVTV-OUT connector VGA blue connector About Serial ATA Drives About Your RAID ConfigurationChanging the Display Settings Hard drive RAID LevelSegment Setting Your Computer to RAID-Enabled Mode Configuring Your Computer for RAIDCreating a RAID Level 1 Configuration Configuring for RAID Using the IntelR Option ROM UtilityCreating a RAID Level 0 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 NextTo Mark a Drive as a Spare Hard Drive Migrating to a RAID 1 VolumeClick Reset Hard Drive to Non-RAID Creating a Spare Hard DriveTransferring Information to a New Computer Rebuilding a Degraded RAID 1 VolumeNext Playing CDs and MoviesPlaying a CD or DVD DVD player includes the following basic buttons Go to the previous title or chapter Eject Adjusting the VolumeAdjusting the Picture Copying CDs and DVDsClick Exact Copy How to Copy a CD or DVDUsing Blank CD-Rs, CD-RWs, DVD+Rs, and DVD+RWs Helpful Tips Network Setup WizardClick Checklist for creating a network Overview Power ManagementStandby Mode Hibernate ModePower Schemes Tab Power Options PropertiesHibernate Tab Advanced TabSetting Up and Using Your Computer Optimizing Performance Hyper-ThreadingOverclocking Click Hardware and click Device ManagerPCI Express Cards Solving Problems Troubleshooting TipsBattery Problems Drive 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 ProblemsProgram stops responding Lockups and Software ProblemsComputer does not start up Computer stops respondingSolid blue screen appears Other software problemsProgram crashes repeatedly Program is designed for an earlier Windows operating systemMouse 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 difficult to read Video and Monitor ProblemsIf the screen is blank 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 Has occurred Button Diagnostic LightsElectrical outlet and press the power Advanced TroubleshootingIf the problem persists, contact Dell Normally, reinstall an additionalIdentified a faulty module or If available, install properly workingOccurred Error exists Requirements exist seeYour computer see Determine if a conflict exists byDrive see Dell DiagnosticsWhen to Use the Dell Diagnostics Hard drive, CD drive, and DVDStarting the Dell Diagnostics From the ResourceCD Starting the Dell Diagnostics From Your Hard DriveDell Diagnostics Main Menu Identifying Drivers What Is a Driver?Drivers Windows XP Reinstalling DriversUsing Windows XP Device Driver Rollback Using the ResourceCDManually Reinstalling Drivers Using Microsoft Windows XP System RestoreRestoring the Computer to an Earlier Operating State Creating a Restore PointUndoing the Last System Restore Enabling System Restore Using Dell PC Restore by SymantecBefore You Begin Reinstalling Microsoft Windows XPResolving Software and Hardware Incompatibilities Windows XP Setup Reinstalling Windows XPBooting From the Operating System CD When the Welcome to Microsoft screen appears, click Next Turning Off Your Computer Removing and Installing PartsBefore You Begin Recommended ToolsBefore Working Inside Your Computer Press to turn on the computer Open the door to use the front-panel connectorsFront and Back View of the Computer Front ViewFront View Doors Open Back View One x16 slot and one x1 slot Opening the Computer Cover Floppy drive CD/DVD drive Processor fan Power supply fansSystem board Power supply Removing and Installing Parts Inside View of Your ComputerSystem 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 CardCard slot PCI Express CardsPCI Express Card PCI ExpressTab Installing a PCI Express CardNot fully seated card Fully seated card Retention arm Alignment guide Alignment bar Filler bracket Removing a PCI Express Card Floppy drive CD/DVD drives Hard drives General Installation GuidelinesDrives Serial ATA Connector Interface cable Interface connector Connecting Drive CablesDrive Interface Connectors Removing a Hard Drive Power Cable ConnectorPower cable 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 First hard drive in lower bay Hard drive bay Floppy DriveRail tabs Removing a Floppy Drive Installing a Floppy DriveData cable power cable Tabs 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 Shroud release lever Anchor tabs Processor Airflow ShroudRemoving the Processor Airflow Shroud 102103 Installing the Processor Airflow ShroudProcessor Removing the ProcessorAnchor tabs Shroud release lever 104105 Processor cover Socket Release lever Installing the Processor106 107 108 Front PanelRemoving the Front Panel 109 Replacing the Front Panel110 Drive DoorRemoving the Drive Door Top bracket hinge Bottom bracket hinge Replacing the Drive Door111 Door 112Hinge tab Door hinges Door bracket 113 BatteryReplacing the Battery Battery Battery socket Tab Removing and Installing Parts114 Closing the Computer Cover115 SpecificationsDrives 116Expansion Bus Controls and Lights Connectors117 Center/Low Frequency Effects LFE channel two front-panelLocated in the Product Information Power118 10 to 35C 50 to 95F System Setup119 Environmental120 Entering System SetupSystem Setup Screens 121 System Setup Options122 123 124 Boot SequenceOption Settings Changing Boot Sequence for the Current Boot125 Changing Boot Sequence for Future Boots126 Clearing Forgotten PasswordsComputer, Keyboard, and Monitor Clearing Cmos SettingsCleaning Your Computer 128 MouseFloppy Drive CDs and DVDsDefinition of Third-Party Software and Peripherals Definition of Dell-Installed Software and PeripheralsDell Technical Support Policy U.S. Only FCC Notices U.S. Only130 Class a Class B131 Contacting DellFCC Identification Information 132 133 134 135 136 137 Fax/Sales Fax 138Ireland Sales Sales dial within U.K. only139 140 141 142 Countries Sales Penang, Malaysia Appendix Switchboard Sales143 144 Trinidad/Tobago General Support Turks and Caicos Islands PowerConnect, and PowerVault Transaction Sales145 146 147 Appendix Index 149Index 151 Reinstalling Windows XPIndex 153 Wizard, 43 reinstalling, 11, 64 scanner, 48 System Restore154

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