I was on my computer when the screen went white, computer would not restart unless I unplugged it from the power supply. It came back on but then a few minutes later it went black and it has not came back on since. The light comes on in the front but that is it. I took the side of and when i try to turn it on the fan in the back jumps a little and a led comes on. I don't know much but I am mad it quit working. It is less than 2 yrs old Gateway Gt 5012 Media Center. Please HELP!!!