Im running Windows 7 ultimate 64 bit. I have took a picture of one of my other BSOD's that happened after closing a game, it was a Kernel Data Inpage error 0x0000007a.
I will try out some mem tests today and see if that picks up anything.
And also i have ran some virus scans with malwarebytes when i started noticing it, it would get to around 30% in and then it would bsod itself, but i recently ran a spyware search with spybot and that picked up nothing but cookies. norton doesnt pickup any virus's when it does its weekly scan. so i dont think it would be virus or spyware related.