DELL D490 ユーザーズマニュアル

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Quick Reference Guide

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 29 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

Starting the Dell Diagnostics From Your Hard Drive

1 Turn on (or restart) your computer.
2 When the DELL™ logo appears, press <F12> immediately.

 

NOTE: 

If you see a message stating that no diagnostics utility partition has been found, see "Starting the Dell 

If you wait too long and the operating system logo appears, continue to wait until you see the 
Microsoft Windows desktop. Then shut down your computer and try again. For more information on 
shutting down your computer, see your User’s Guide.

3 When the boot device list appears, highlight Boot to Utility Partition and press <Enter>.
4 When the Dell Diagnostics Main Menu appears, select the test you want to run. For more information 

on the tests, see your User’s Guide.