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Optiplex 990 Turns on but no display
I have dell optiplex 990 when I turn it on power button is blue and diagnostic lights 1 and 3 are on but no display
Unsolved
1 Message
0
3144
I have dell optiplex 990 when I turn it on power button is blue and diagnostic lights 1 and 3 are on but no display
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redxps630
7 Technologist
7 Technologist
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10.4K Posts
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April 7th, 2020 10:00
problem: Memory modules are detected, but a memory configuration or compatibility error has occurred. 990 service manual
remove all ram, put only one in DIMM 1, try again.