My computer seems to be eating PSUs. I got the computer, and the orginal stock PSU Died. I replaced it (a 90w) with a 180w, and after a couple hours of running the second PSU died. THe compuer would not power up, and the power LED turned Amber instead of Green when i pressed the power button. Nothing else powered up. Plugging in a 3rd spare powersupply started it normally again. Is it possible for a computer to constantly blow PSUs? How can this be prevented?