So I was gaming on my PC for like 5 hours straight it was hot. It turned off in the middle of me playing and then wouldn't turn back on just went to a black screen no fan sounds or nothing. I tried turning it on again and got nothing so I turned it all off and then tried again and then saw a flash from the back of my PC. I opened the case and clicked the power button the fans move for like a second but nothing else happens. My motherboard has a green light on. I don't know what's wrong with it so please help me. I've had it since Christmas 2012.