Having problems with your Dell Optiplex 755 Minitower Desktop Computer ?

Optiplex 755 flashing orange power button light only

\015 Only light otherwise is the green led on the network card. No fans, optical drive or anything else powers up.\015

Answers :

Sounds like you only have power going to your motherboard.

The power supply might be bad on it, that or maybe the power cord is going bad and is only letting a small amount go through. I don't see why there should be a problem if you have even a little bit of power going though.
My dell optiplex 755 showing orange colour light on power butten
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