D i a g n o s t i c L i g h t C o d e s B e f o r e P O S T ( c o n t in u e d )
Light Pattern | Cause | Action |
|
|
|
| Possible VRM 1 failure. | Perform the procedure in "Microprocessor Problems." |
A B C D
Possible VRM 0 and VRM 1 failure. Perform the procedure in "Microprocessor Problems."
A B C D
Possible memory riser board A failure. Perform the procedure in "System Memory Problems."
A B C D
Possible memory riser board B failure. Perform the procedure in "System Memory Problems."
A B C D
Possible memory riser board A and | Perform the procedure in "System Memory Problems." |
riser board B failure. |
|
A B C D
= y e l l o w = g r e e n = o f f
Boot Diagnostic Codes
The following table lists the codes for the diagnostic lights that occur while the computer is performing the POST.
NOTE: If the computer is turned on and all four diagnostic lights are not on, see "Preboot Diagnostic Codes."
