Dell Precision 650N Setup And Quick Reference Manual page 37

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
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
= y e l l o w
= g r e e n
= o f f
Problem Description
A possible system board failure
has occurred.
A microprocessor and/or VRM
mismatch exists.
A possible VRM 0 failure has
occurred.
A possible VRM 1 failure has
occurred.
A possible VRM 0 and VRM 1
failure has occurred.
Problem Description
A possible BIOS failure has
occurred; the computer is
in the recovery mode.
Suggested Resolution
Contact Dell for technical assistance.
Perform the procedure in "Microprocessor Problems" in
your User's Guide.
If the problem is still not resolved, contact Dell for
technical assistance.
Contact Dell for technical assistance.
Perform the procedure in "Microprocessor Problems" in
your User's Guide.
If the problem is still not resolved, contact Dell for
technical assistance.
Contact Dell for technical assistance.
Suggestion Resolution
Run the BIOS Recovery utility, wait for recovery
completion, and then restart the computer.
Setup and Quick Reference Guide
37