Dell Precision T7400 User's Guide - Page 7
Troubleshooting Tools, Reinstalling Software - error codes
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Page 7 highlights
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 Contents 7