Hey there, I had the same problem with my computer. Hopefully yours doesn't need what mine did... I ended up replacing the power supply with a bigger one, and had to wait over a week to get it back from newegg... then once I got the new one, it ended up being the mobo that was dead. Had to wait another week to get that back... Once both were replaced, it worked fine. I would try replacing the power supply first, and if it still does it, the mobo. Hope this helps. -Dennis