56 Troubleshooting Tools
Dell Diagnostics
  CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product 
Information Guide.
If you experience a problem with your computer, perform the checks in "Solving Problems" on page 37 
and run the Dell Diagnostics before you contact Dell for technical assistance.
  NOTICE: The Dell Diagnostics works only on Dell™ computers.
1
Turn on (or restart) your computer.
2
When the DELL™ logo appears, press <F12> immediately.
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 (see "Turning Off Your Computer" on 
page 65) and try again.
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.
Dell Diagnostics Main Menu
1
After the Dell Diagnostics loads and the 
Main
 
Menu
 screen appears, click the button for the option 
you want.
2
If a problem is encountered during a test, a message appears with an error code and a description of the 
problem. Write down the error code and problem description and follow the instructions on the 
screen.
If you cannot resolve the error condition, contact Dell (see "Contacting Dell" on page 126).
  NOTE: The Service Tag for your computer is located at the top of each test screen. If you contact Dell, technical 
support will ask for your Service Tag.
Option Function
Express Test Performs a quick test of devices. This test typically takes 10 to 
20 minutes and requires no interaction on your part. Run 
Express Test first to increase the possibility of tracing the 
problem quickly.
Extended Test Performs a thorough check of devices. This test typically takes 
an hour or more and requires you to answer questions 
periodically.
Custom Test Tests a specific device. You can customize the tests you want 
to run.
Symptom Tree Lists the most common symptoms encountered and allows 
you to select a test based on the symptom of the problem you 
are having.