Dell 400 owner manual Resolving Software and Hardware Incompatibilities

Sound and Speaker Problems	49
No sound from speakers	49
No sound from headphones	50
Video and Monitor Problems	50
If the screen is blank	50
If the screen is difficult to read	51

3 Troubleshooting Tools

Diagnostic Lights	53
Dell Diagnostics	56
Dell Diagnostics Main Menu	56
Drivers	57
What Is a Driver?	57
Identifying Drivers	58
Reinstalling Drivers	58
Resolving Software and Hardware Incompatibilities	59
Restoring Your Operating System	59
Using Microsoft Windows XP System Restore	60
Using Dell PC Restore by Symantec	61

4 Removing and Installing Parts

Before You Begin	63
Recommended Tools	63
Turn Off Your Computer	63
Before Working Inside Your Computer	64
Front View of the Computer	65
Back View of the Computer	67
Removing the Computer Cover	68
Inside View of Your Computer	70
System Board Components	71

Contents

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