Dell Precision T7400 (Late 2007) - Manual (Page 7)

Contents 7
10 Troubleshooting Tools
. . . . . . . . . . . . . .
105
Diagnostic Lights . . . . . . . . . . . . . . . . . . . . 105
Diagnostic Light Codes Before POST . . . . . . . 105
Diagnostic Light Codes During POST
. . . . . . .
108
Power Lights . . . . . . . . . . . . . . . . . . . . . . 113
Beep Codes . . . . . . . . . . . . . . . . . . . . . . . 115
Error Messages . . . . . . . . . . . . . . . . . . . . . 116
Dell Diagnostics . . . . . . . . . . . . . . . . . . . . . 123
When to Use the Dell Diagnostics . . . . . . . . . 123
Starting the Dell Diagnostics From Your Hard Drive 124
Starting the Dell Diagnostics From the Drivers and Utilities Media
124
Dell Diagnostics Main Menu
. . . . . . . . . . . . 125
11 Reinstalling Software
. . . . . . . . . . . . . .
129
Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 129
What Is a Driver? . . . . . . . . . . . . . . . . . . 129
Identifying Drivers . . . . . . . . . . . . . . . . . 129
Reinstalling Drivers and Utilities . . . . . . . . . . 130
Troubleshooting Software and Hardware Problems in the Microsoft ®
Windows ® XP and Microsoft Windows Vista™ Operating Systems
131
Restoring Your Operating System . . . . . . . . . . . . 132
Using Microsoft Windows System Restore . . . . 132
Using Dell™ PC Restore and Dell Factory Image Restore 134
Using the Operating System Disc . . . . . . . . . 137