8 ContentsPower Problems . . . . . . . . . . . . . . . . . . . . . 94Ensuring Sufficient Power for Your Computer . . . 95Printer Problems . . . . . . . . . . . . . . . . . . . . . 95Scanner Problems . . . . . . . . . . . . . . . . . . . . 96Sound and Speaker Problems . . . . . . . . . . . . . . 97No sound from integrated speakers . . . . . . . . 97No sound from external speakers . . . . . . . . . 97No sound from headphones . . . . . . . . . . . . 98Touch Pad or Mouse Problems . . . . . . . . . . . . . 98Video and Display Problems . . . . . . . . . . . . . . 98If the display is blank . . . . . . . . . . . . . . . . 99If the display is difficult to read . . . . . . . . . . 99If only part of the display is readable . . . . . . . 100Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 100What Is a Driver? . . . . . . . . . . . . . . . . . . 100Identifying Drivers . . . . . . . . . . . . . . . . . 100Reinstalling Drivers and Utilities . . . . . . . . . . 101Resolving Software and HardwareIncompatibilities . . . . . . . . . . . . . . . . . . . . . 103Restoring Your Operating System . . . . . . . . . . . . 104Using Microsoft Windows XP SystemRestore . . . . . . . . . . . . . . . . . . . . . . . 104Using Dell PC Restore by Symantec . . . . . . . . 106Using the Operating System Media . . . . . . . . 108
