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Computer won't turn back on after idle.

Last response: in Components
July 17, 2012 12:39:19 PM

Motherboard- Foxconn A76ML-K 3.0 AM3
CPU- AMD Phenom x4 3.2Ghz 955 Deneb
RAM- CORSAIR Vengeance 8GB (2 x 4GB)
PSU- Sparkle Power 325w
HDD- Seagate Barracuda 500gb 7200.9RPM

Okay, I recently built this computer and when I first assembled it it would turn on, so I jumped the green and black PS wires and all the fans spun and HDD started making noise. So I removed the jumper and tried to turn it on again...Fired right up no problem. After I left it when it was off for more than 20 minutes it wouldnt turn on again and I would have to do the jumper thing again. But after I hit the power button the PSU would begin making a faint whining noise.
a b ) Power supply
July 17, 2012 2:58:52 PM

get new PSU
July 17, 2012 3:01:50 PM

Tried that still does the same thing. Just with no whining.
a b ) Power supply
July 17, 2012 3:04:08 PM

bad PSu can damage other hardware ... soon