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.

Dell Diagnostics

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

When to Use the Dell Diagnostics

If you experience a problem with your computer, perform the checks in "Lockups and Software Problems" (see "Troubleshooting" in your User’s Guide) and run the Dell Diagnostics before you contact Dell for assistance.

You can run the Dell Diagnostics from your hard drive or from the Drivers and Utilities disc.

See "System Setup" in your User’s Guide 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.

NOTE: The Dell Diagnostics works only on Dell computers.

NOTE: Print the following procedures before you run the Dell diagnostics.

Starting the Dell Diagnostics From Your Hard Drive

The Dell Diagnostics is located on a separate diagnostic utility partition on your hard drive.

NOTE: If your computer cannot display a screen image, see "Contacting Dell" in your User’s Guide.

1Turn on (or restart) your computer.

2When the DELL logo appears, press <F12> immediately.

NOTE: Keyboard failure may result when a key is held down for extended periods of time. To avoid possible keyboard failure, press and release <F12> in even intervals to open the Boot Device Menu.

Quick Reference Guide

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Dell T7400 manual When to Use the Dell Diagnostics, Starting the Dell Diagnostics From Your Hard Drive