Hey, first time posting here. Well I have a problem with my computer that I'd like to fix. As of now I've found the crash problem in only two games: Fallout 3 GOTY and LoL (League of Legends), these games crash respectively after 1 hour and after 10-15 minutes. The crash goes something like this: I'm playing fine and all of a sudden the screen turns black but I can hear sound for 3-4 seconds, after the 3-4 seconds pass there's just a stuttering noise, and I can't do nothing but to restart the PC manually. All this problem began when I was playing a Fallout 3 DLC, Operation Anchorage, before that Fallout didn't crash or anything, ir worked fine. I've tried some fixes, like formating the PC, updating the drivers, system restore, and reistalling both the games, nothing worked. PC Specs: Windows 7 Home Premium 64-Bit Service Pack 1 Intel(R) Core(TM) i3 CPU 540 @3.07GHz Nvidia GForce 315 4,00GB RAM So any ideas? And if you need more info tell me, but you gotta know I'm kinda noob on PC's so maybe you gotta explain me.