Dell Dimension 8400 Series, Manual

Page: 55 / 148

Advanced Troubleshooting
55
Dell Diagnostics
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions
located in the Product Information Guide .
If you experience a problem with your computer, perform the checks in "Solving Problems" on
page 35 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 page 63) 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 (see
page 55).
Dell Diagnostics Main Menu
1
After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the
option you want.
The computer is in a normal operating
condition after POST. None.
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.
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
A B C D