Hi I know this may be a long read but I hope you'll read it since I tried to get as much detail about my problem in it as possible. Thank you. my Specs are at the bottom if you wish to read them first. I recently upgraded my GPU and I have been playing games rather intensely since I got it. The BSOD first appeared playing Skyrim where the game would freeze (and the rest of the PC) but the audio would continue. this freeze lasted about a minute and the computer BSOD'd after that when playing skyrim the freezing would happen and occasionally the game would continue... this is strange because I was able to get through the entire tomb raider story with only one crash (Though I think this was due to over heating and while watching the heat it never happened again) also the crashes occur without any heat building up. and using a head monitor the GPU peaked at 64C and the CPU at around 45C playing skyrim Now any game I play (such as hitman, just cause 2, and skyrim) I can get at MOST 20-30 minutes before it crashes with a BSOD. I'v checked my driver and used sweeper to uninstall and install the latest beta (Catalyst 3.3 I think) I've ran disk checks with no errors and defragmented my HDD. and any other solution I could find.... (Excluding windows repair as I can not currently find my W7 disk) I also ran bluescreen view and the files marked in read were: "ntoskrnl.exe" this was highlighted every time and I understand it to be the OS. "AtihdW76.sys" this only occurred on the first recorded crash (there have been 10 so far recorded) "Ntfs.sys" this one has only occurred once on the second last time so far. one other thing I noticed was a strange sound coming from my case just before it happens... At first i believed it to be hard drive clicking but it is much quieter and sound like what can only be described as the sound made when the light turns on when your electric oven or fryer heats up (Though I don't know if that'll help.) My Specs are: OS: Windows 7 Ultimate CPU: FX 4170 (Quaud 4.2GHz) GPU: ATI Radeon HD 7950 DD Edition MotherBoard: Asus M5A78L-M/USB3 RAM: 8GB DDR3 1333MHz PSU: I don't actually know the brand or rail but I know its 750w and I think its 12v I think thats all the details, I home someone will be able to help diagnose my problem, Thanks! [EDIT]: I forgot to mention that I've never got the BSOD except for playing intensive games.... everything else is fine when on desktop or playing less intensive games like minecraft... though I did freeze up playing Darksiders 2 a few times but it has recovered and didn't crash.