To start the Hardware Troubleshooter:
Windows Vista:
1Click the Windows Vista Start button 
, and click Help and Support.
2Type hardware troubleshooter in the search field and press <Enter> to start the search.
3In the search results, select the option that best describes the problem and follow the remaining troubleshooting steps.
Windows XP:
1Click Start→ Help and Support.
2Type hardware troubleshooter in the search field and press <Enter> to start the search.
3In the Fix a Problem section, click Hardware Troubleshooter.
4In the Hardware Troubleshooter list, select the option that best describes the problem and click Next to follow the remaining troubleshooting steps.
Dell Diagnostics
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in Lockups and Software Problems (see "Lockups and Software Problems" on page 44) and run the Dell Diagnostics before you contact Dell for technical assistance.
It is recommended that you print these procedures before you begin.
NOTICE: The Dell Diagnostics works only on Dell computers.
NOTE: The Dell Drivers and Utilities media is optional and may not ship with your computer.
See your Service Manual at support.dell.com to review your computer’s configuration information, and ensure that the device that you want to test displays in the system setup program and is active.
Start the Dell Diagnostics from your hard drive or from the Dell Drivers and Utilities media.
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