Dell Precision 8F765 Setup And Quick Reference Manual page 48

D i a g n o s t i c L i g h t C o d e s D u r i n g P O S T
Light Pattern
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
= y e l l o w
= g r e e n
= o f f
48
Setup and Quick Re ference Guide
Cause
green Possible system board resource and/or hardware failure.
yellow
yellow
green
green Possible system board resource and/or hardware failure.
yellow
green
green
green Possible expansion card failure or conflict.
green
yellow
yellow
yellow Possible USB failure.
green
green
green
green Normal operating condition after POST.
green
green
green
(continued)