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Solving Problems 197
Back Panel Light Codes
Light
pattern
Problem Description Suggested Resolution
off
off
off
off
Normal off condition
or possible pre-BIOS
failure
Verify that the computer is
plugged into a working
outlet and that you have
pressed the power button.
green
yellow
yellow
yellow
Possible BIOS failure Contact Dell for technical
assistance.
yellow
green
yellow
yellow
Possible processor
failure
Reseat the processor(s) and
the terminator card (if
present), and restart the
computer to retest.
green
green
yellow
yellow
Possible memory
failure
Reseat all DIMMs and
restart the computer to
retest.
yellow
yellow
green
yellow
Possible expansion card
failure
Remove each expansion
card individually, and
restart the computer to
retest.
Reinstall the expansion
card(s) one at a time, and
restart the computer to
retest.
Move each expansion card
one at a time to another
PCI slot, and restart the
computer to retest.