as some of you may know I have recently built a computer. I was updating my computer before I left for work and I come home to it being turned off when no one touched it. so when I go to turn it on, the power light flashes, fans spin and what not but for not even a second. it was all up and running going at it fine before I left, but now it wont start up. I switched out the psu with an old one and it turns on and runs. im not sure if the motherboard is what does it only after a couple of hours or its actually the psu. my parts are gigabyte ga-970a-ud3 mobo, amd fx-6300, g.skill ripjaw series 8gb 1600mhz, Seagate barracuda 1tb, lite on dvd reader/writer, corsair cx 600w builder bronze series, sapphire radeon hd 5750 vapor x, and d link pci wireless adapter. I don't know if the psu short circuited or what but it wont turn on and stay on unless I switch out psu. all help is greatly appreciated. before I send it back