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No post, only motherboard light on, green.

\015 Cannot get power supply on. power switch is fine. unplugged everything 2 or 3 times. tried all power up procedures. the motherboard power light is green, steady. heard about this problem before, forgot the fix.HP Pavilion 510n worked fine, then moved it. When I first turned it on the power button light came on and it seemed the fans were starting to spin, then nothing. I pulled the case and I can see the green light on the motherboard, but otherwise its dead\015

Answers :

You might try resetting the bios by removing the battery and the power cable. If there are pins to short do this too after removing the battery and the power cable.
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