About my Mac: Macbook Pro 15 inch from early June, 2010. Started with 4 GB RAM, one stick went out and replaced with a 4 GB. Total of 6 GB now. NViDIA GeForce GT 330M Intel i7 processor 500 GB hard drive, NOT solid state. The problem I am having occurs when I play a game. I first notticed it while watching a replay from Star Craft 2, then when I played the first Star Craft. After a reboot and a diagnostic, no errors were found, so I installed smc Fan control again. Even with the fans going on full with a cooling pad, the problem continues to occur. It also happens when playing Amnesia and Minecraft, yet Star Craft 2 itself seems to work fine... The problem is that at random times it seems, my computer locks up. The display flashes then goes out completely, and if sound had been playing it begins a short loop of that sound. The keys stay lit up. I first notticed this problem awhile back, and Tech support just told me to reboot my computer every so often. Although, back then it was only after I would wake the computer from sleep and start doing something. The problem with games has only started up here recently...the first time I tried watching an old Star Craft 2 replay. Sometimes I can play a game with no problem and I quit before anything happens. I've played for a few hours, nothing happens. Then there are sometimes, after awhile, it cuts out. However, one of the games will even cut out within moments of starting the game. Anyone have an idea of what's going wrong with my computer?