198 Solving Problems
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Diagnostic Light Codes During POST
Light Pattern Cause Action
Possible BIOS failure, and the computer is in
the recovery mode. Run t he BIOS Recovery Utility, and restart the
computer to retest.
If the problem is still not resolved, perform the
procedure in "Reset Corrupted BIOS Settings."
Possible microprocessor failure. Perform the procedure in "Microprocessor
Problems."
Possible memory failure. Perform the procedure in "System Memory
Problems."
Possible expansion card failure or conflict. Perform the procedure in "Expansion-Card
Problems" and see "Hardware Conflicts."
Possible video card failure. Reseat the video card, and restart the computer
to retest. For instructions on removing and
installing an expansion card, see "Removing an
Expansion Card."
If the problem is not resolved, perform the
procedure in "Expansion-Card Problems."
If the problem is still not resolved, contact Dell
for technical assistance.
Possible diskette drive or hard drive failure. Perform the procedures in "Diskette Drive
Problems" and "Hard Drive Problems."
A B C D
A B C D
A B C D
A B C D
A B C D
A B C D
= yellow
= green
= off