Using The Last Known Good Configuration; Dell Diagnostics - Dell Precision 390 Guía De Referencia Rápida

4 Click the System Restore tab.
5 Ensure that Turn off System Restore is unchecked.

Using the Last Known Good Configuration

1 Restart your computer and press <F8> when the message
system to start
2 Highlight 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 located
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
34
Quick Reference Guide
appears.
Please select the operating