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I replaced my power supply with a new one. I connected all cable to the motherboard 24-pin and Molex, HDD and DVD power cable, then I started my PC and I used it for about one hour.

After I shut down my pc, and I wanted to start it again. But the PC is not starting and the motherboard LED won't light up. The PSU was set to 230V because I live in Europe.

My new power supply is dead? How could that be?

Specs:

  • CPU: Core 2 Duo
  • PSU: ATX 470W
  • Motherboard: Asus P5QL PRO.
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my new PSU has a similar problem. Look at my question here: (superuser.com/questions/523379/strange-smps-behavior) –  Spandan Chatterjee Dec 26 '12 at 6:48
    
in my case i think the problem is the gpu, because when I detach the gpu the pc start. –  flatronka Dec 26 '12 at 13:44
    
You did say that the computer can start without the GPU plugged in. I am thinking that the PSU is not powerful enough to power the computer with the GPU. What kind of GPU is it? –  icebox3d Dec 26 '12 at 17:03
    
Geforce 8600 GS, thanks for your answer –  flatronka Dec 26 '12 at 17:09
    
Do you still have the old PSU? If you do I would recommend checking the watts on the old one. If it is more then the one you have then I would get a PSU that is the same in terms of watts as the old one or more –  icebox3d Dec 26 '12 at 17:13

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