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4Click the System Restore tab.

5Ensure that Turn off System Restore is unchecked.

Using the Last Known Good Configuration

1Restart your computer and press <F8> when the message Please select the operating system to start appears.

2Highlight Last Known Good Configuration, press <Enter>, press <l>, and then select your operating system when prompted.

Other Options to Help Resolve Additional Device or Software Conflicts

NOTICE: The following processes erase all of the information on your hard drive.

Reinstall your operating system using the operating system installation guide and Operating System CD.

During the operating system reinstallation, you can select to delete the existing partitions and reformat your hard drive.

Reinstall all drivers, beginning with the chipset, using the Drivers and Utilities CD.

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 "Solving Problems" on page 32 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. Using this program with other computers can cause incorrect computer responses or result in error messages.

The Dell Diagnostics allow you to:

Perform quick checks or extensive tests on one or all devices

Choose how many times a test is run

Display or print test results or save them in a file

Suspend testing if an error is detected or terminate testing if a certain number of errors occur

Access online Help screens that describe the tests and how to run them

Read status messages that tell you whether tests completed successfully

Receive error messages if problems are detected

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Quick Reference Guide

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Dell dell precision workstation manual Using the Last Known Good Configuration, Dell Diagnostics