Contents 710 Troubleshooting Tools . . . . . . . . . . . . . . 105Diagnostic Lights . . . . . . . . . . . . . . . . . . . . 105Diagnostic Light Codes Before POST . . . . . . . 105Diagnostic Light Codes During POST . . . . . . . 108Power Lights . . . . . . . . . . . . . . . . . . . . . . 113Beep Codes . . . . . . . . . . . . . . . . . . . . . . . 115Error Messages . . . . . . . . . . . . . . . . . . . . . 116Dell Diagnostics . . . . . . . . . . . . . . . . . . . . . 123When to Use the Dell Diagnostics . . . . . . . . . 123Starting the Dell Diagnostics From Your Hard Drive 124Starting the Dell Diagnostics From the Drivers and Utilities Media124Dell Diagnostics Main Menu . . . . . . . . . . . . 12511 Reinstalling Software . . . . . . . . . . . . . . 129Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 129What Is a Driver? . . . . . . . . . . . . . . . . . . 129Identifying Drivers . . . . . . . . . . . . . . . . . 129Reinstalling Drivers and Utilities . . . . . . . . . . 130Troubleshooting Software and Hardware Problems in the Microsoft®Windows® XP and Microsoft Windows Vista™ Operating Systems131Restoring Your Operating System . . . . . . . . . . . . 132Using Microsoft Windows System Restore . . . . 132Using Dell™ PC Restore and Dell Factory Image Restore 134Using the Operating System Disc . . . . . . . . . 137
