Dell MTC2, G7279, DMC Video and Monitor Problems, No sound from headphones, If the screen is blank

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REINSTALL THE AUDIO (SOUND) DRIVER — See page 45.

CHECK FOR INTERRUPT REQUEST CONFLICTS — See page 49.

No sound from headphones

CHECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is securely inserted into the headphone connector (see page 49).

DISABLE DIGITAL MODE — Your CD or DVD drive headphones do not work if the CD or DVD drive is operating in digital mode. To disable digital mode:

1 Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices. 2 Click Sounds and Audio Devices.

3 Click the Hardware tab.

4 Double-click the name of your CD drive. 5 Click the Properties tab.

6 Uncheck the Enable digital CD audio for this CD-ROM device box.

ADJUST THE WINDOWS VOLUME CONTROL — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.

Video and Monitor Problems

If the screen is blank

NOTE: See the monitor documentation for troubleshooting procedures.

CHECK THE MONITOR POWER LIGHT — If the power light is off, firmly press the button to ensure that the monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light is blinking, press a key on the keyboard or move the mouse.

CHECK THE MONITOR CABLE CONNECTION — Check the connector for bent or broken pins. (It is normal for monitor cable connectors to have missing pins.)Ensure that the video cable is connected as shown on the setup diagram for your computer.

TEST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

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Solving Problems

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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 Abbreviations and Acronyms Contents Mail, Modem, and Internet Problems Program is designed for an earlier Microsoft WindowsAdvanced Troubleshooting Using Microsoft Windows XP System RestoreResolving Software and Hardware Incompatibilities Adding or Replacing a Second Hard DriveAppendix Safety Instructions Safety InstructionsW . d e l l . c o m s u p p o r t . d e l l . c o m Finding Information for Your Computer Microsoft Windows License LabelDownloads Drivers, patches, and software updates Support questionsOnline courses Technical supportSetting Up a Printer Connecting a Parallel PrinterSetting Up and Using Your Computer Printer CableConnecting a USB Printer Parallel connector on computerScrews Clips Parallel printer Cable Notches Setting Up a Home and Office Network Connecting to a Network AdapterUSB connector on computer Connecting to the Internet Network Setup WizardClick Checklist for creating a network Network wall jack Network cableSetting Up Your Internet Connection Click Connect to the InternetIf you have a CD, click Use the CD I got from an ISP How to Copy a CD or DVD Using Blank CD-Rs and CD-RWsCopying CDs and DVDs Click Exact CopyHyper-Threading Helpful TipsClick Hardware and click Device Manager Booting to a USB Device Turning Off Your ComputerTurn Off Computer Turn off computer window, click Turn off Finding Solutions Solving ProblemsW . d e l l . c o m s u p p o r t . d e l l . c o m See Battery Problems Drive ProblemsFloppy drive problems Finding Help InformationCD drive problems Back of floppy disk Write-protected Not write- protectedProblems writing to a CD-RW drive DVD drive problemsMail, Modem, and Internet Problems Hard drive problemsError Messages General Problems Computer stops respondingOther software problems Program stops respondingProgram crashes repeatedly Solid blue screen appearsOther technical problems General hardware problemsIeee 1394 Device Problems Keyboard Problems Mouse ProblemsNetwork Problems Power Problems Network integritySpeed light Printer Problems Scanner Problems Sound and Speaker Problems No sound from speakersVideo and Monitor Problems No sound from headphonesIf the screen is blank If the screen is difficult to read Solving Problems Diagnostic Lights Light Pattern Problem Description Suggested ResolutionAdvanced Troubleshooting Identified a faulty module or ErrorIf available, install properly If the problem persists, contactIf the problem persists or Different connector and restartYou have identified a faulty Connector or reinstalled allConnector placement That you are installing areMemory module/memory Requirements seeDell Diagnostics Starting the Dell DiagnosticsDell Diagnostics Main Menu Option FunctionTab Function What Is a Driver? Reinstalling DriversDrivers Identifying DriversUsing Windows XP Device Driver Rollback Manually Reinstalling DriversRestoring Your Operating System Click Roll Back DriverUsing Microsoft Windows XP System Restore Creating a Restore PointClick System Restore Restoring the Computer to an Earlier Operating StateUsing Dell PC Restore by Symantec Enabling System Restore Click Performance and MaintenanceClick the System Restore tab Click Performance and Maintenance and click SystemAdvanced Troubleshooting Front and Back View of the Computer Front ViewOn computers with an optional floppy drive Adding Parts Computer. Instead, perform an operating system shutdown Back View Network jack Removing the Computer Cover GuideComputer cover Cover latch Back of computer Looking Inside Your Computer System Board Adding Cards Securing screw Filler bracketCard Card cutout CrossbarNot fully seated card Fully seated card Bracket Adding or Replacing the AGP Card Installing an AGP Card Notch Lever Tab Card clip AGP connectorPCI connector AGP card Card clip lever Slot connectorAdding or Replacing a Second Hard Drive Existing hard drive ScrewsDrive bracket Drive bracket Adding a Floppy Drive Side hinges Front panel Top tab Middle tabBottom tab Tabs Insert Top bracket screw Drive bracket Floppy drive Side hinges Front panel Adding a Second CD or DVD Drive Bottom tab Adding Parts Insert Tabs Drive Alignment screwsDrive Securing screw Side hinges Front panel Memory Installation Guidelines Adding MemoryDDR Memory Overview Installing Memory Securing clips Connector NotchReplacing the Computer Cover Specifications System InformationExpansion Bus AppendixPorts and Connectors MemoryOther factors DrivesPower VideoAudio NetworkSystem Setup OverviewEnvironmental Viewing Settings System Setup ScreensKeys Action Boot Sequence Option SettingsChanging Boot Sequence for the Current Boot Clearing Forgotten Passwords Changing Boot Sequence for Future BootsReplacing the Battery Battery Battery socket Definition of Dell-Installed Software and Peripherals Dell Technical Support Policy U.S. OnlyFCC Notices U.S. Only Definition of Third-Party Software and PeripheralsClass a Class B Contacting Dell FCC Identification InformationAppendix Appendix Appendix Appendix Appendix Appendix Appendix Area Codes Local Numbers, Toll-Free Numbers Appendix 100 101 102 103 104 105 106 Index Index 107Index Help files accessing, 9 Compatibility, 27 restore to previous operating108 Index Wizard, 27 reinstalling, 47 scanner, 34 System Restore Wizards Program Compatibility WizardIndex 109 Index 110