Every time I play Left 4 Dead for longer than about 10 mins, I get a BSoD. I am consistanly getting STOP ERROR 0xA. After looking into this, windows support sayd it is caused by having an nvidia gpu, chipset, and at least 4 gigs of ram, (i have all of those). So I just removed a stick of ram to see if that resolved the issue, then as I was just browsing the internet, another BSoD! This time STOP ERROR 0x50 . Is the problem my harrdware? I have run a MemDiagnostic tool for awhile without any errors. Computer: ASUS m3n sli deluxe AMD phenom 9850 nVidia 8800 GTS (640) X2 OCz PC2 6400 4 X 1 gig sticks (one currently out) Windows 7 64bit Any help would be appreciated. Thanks!