Dell 1G155 manual Light Pattern Cause Green, Yellow Green

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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 (continued)

Light Pattern		Cause
A	green	Possible system board resource and/or hardware failure.
B	yellow
C	yellow
D	green
A	green	Possible system board resource and/or hardware failure.
B	yellow
C	green
D	green
A	green	Possible expansion card failure or conflict.
B	green
C	yellow
D	yellow
A	yellow	Possible USB failure.
B	green
C	green
D	green
A	green	Normal operating condition after POST.
B	green
C	green
D	green

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System Messages

If an error occurs during start-up, a message may be reported on the monitor identifying the problem. If a system message is displayed, look it up under "System Messages" in the User’s Guide for suggestions on resolving any problems. The system messages are listed alphabetically.

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Setup and Quick Reference Guide