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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
Light Pattern
yellow
A
yellow
B
green
C
yellow
D
yellow
A
yellow
B
green
C
green
D
yellow
A
green
B
yellow
C
yellow
D
yellow
A
green
B
yellow
C
green
D
yellow
A
green
B
green
C
yellow
D
green
A
green
B
green
C
yellow
D
= y e l l o w
= g r e e n
= o f f
(continued)
Cause
Possible microprocessor failure.
Possible memory failure.
Possible expansion card failure or conflict.
Possible video card failure.
Possible floppy drive or hard drive failure.
After video initialization, an alert was found. Check
the computer screen for an error message.
Setup and Quick Reference Guide
47
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