Dell Precision 7F867 Setup And Quick Reference Manual page 48

48
Setup and Quick Re ference Guide
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
green
A
green
B
green
C
yellow
D
A
green
B
yellow
C
yellow
D
green
green
A
yellow
B
green
C
green
D
A green
green
B
C yellow
yellow
D
A
yellow
B
green
C
green
D
green
green
A
green
B
green
C
green
D
= y e l l o w
= g r e e n
= o f f
(continued)
Cause
After video initialization, an alert was found. Check
the computer screen for an error message.
Possible system board resource and/or hardware failure.
Possible system board resource and/or hardware failure.
Possible expansion card failure or conflict.
Possible USB failure.
Normal operating condition after POST.