BSOD when playing MW2, BF3 etc.

Hey guys, I've been experiencing BSOD's a lot lately and have re-installed Windows like 3 times all to no effect. I believe that the problem only occurs when I plug in my graphics card and install the drivers (I'm using the 314.22 driver from Nvidia). I can only play maybe 20 minutes if that of any game until I receive the BSOD. Just before I received a error dxgmms1.sys and watchdog.sys, and the regular error ntoskrnl.exe. I will attach all my dmp files etc.

Sorry one more thing to add, I am now running it on Windows 8 and I understand this is Windows 7 forum but I can always downgrade back to Windows 7.

Thank you and I hope to receive help with this.

Okay thanks I just did that, is there a way I can delete this thread or does an admin have to?

Ok thank you.

Hey I was wondering I'm thinking about changing back to Windows 7, would you be able to help me if I do that because Windows 8 is doing my head in.

Alright thanks very much. I'll post some updated info after I'm done.

There just got Windows 7 working now, so far I haven't received a BSOD but its bound to happen. Also Windows update has about 140 updates for me to do, but I know your not supposed to download your Nvidia drivers through there so I only just unticked that in time cause it was doing it by itself last time could that maybe be the problem? And are the other drivers and such safe to install? Cheers.