56 Advanced Troubleshooting
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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" (see
page 37) and run the Dell Diagnostics before you contact Dell for technical assistance.
NOTICE: The Dell Diagnostics works only on Dell™ computers.
Start the Dell Diagnostics from either your hard drive (see page 56) or from the
Dell Dimension
ResourceCD
.
Another failure has occurred.
• Ensure that the cables are properly
connected to the system board from
the hard drive, CD drive, and DVD
drive (see page 75).
• If there is an error message on your
screen identifying a problem with a
device (such as the floppy drive or
hard drive), check the device to make
sure it is functioning properly.
• The operating system is attempting to
boot from a device (such as the floppy
drive or hard drive); check system
setup (see page 119) to make sure the
boot sequence is correct for the
devices installed on your computer.
• If the problem persists, contact Dell
(see page 131).
The computer is in a normal operating
condition after POST.
None.
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
ABCD
ABCD