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computer will not turn OFF after installing new PSU


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#1 inventor1488

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Posted 18 August 2011 - 05:19 PM

My HP A6000 desktop had the PSU fan go out. I went to Fry's to pickup another PSU and installed it after a *little" case mod (cutting away a small metal flap at the edge of where the PSU comes flush with the case). While the fan works now- the computer will not STAY OFF. It will shut down properly, show nothing for about 3 seconds, then boot again. The old PSU was 250 watts. The lowest I could find at Fry's was 380. But the mobo supports core 2 quad so 380 watts isn't exactly overkill (currently running pentium dual). Any thoughts?

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#2 killerx525

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Posted 18 August 2011 - 05:27 PM

Is the power button stuck?

>Michael 
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#3 inventor1488

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Posted 18 August 2011 - 05:41 PM

Is the power button stuck?

nope

#4 Dave225

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Posted 18 August 2011 - 06:45 PM

If you are sure of the wiring ( all jumpers are attached and in the correct place ) it may be a defective PS.
The power switch is probably not shorted since the pc would never stay powered on.

I assume when you press the power on button the pc powers up and you can use if fine for as long as you like?

Then when you want to shut down you press Start, Shutdown and the OS shuts down correctly.
But a few seconds later powers on like you had pressed the power on button again ?

Try removing power by unlpugging from the wall outlet for a few minutes. Re-connect ; does it power up WITHOUT you pressing the power on button?




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