I have a 9600 GSO XFX graphics card and generally whenever I play a game i get BSOD with nvlddmkm.sys as the error. The BSOD occurs generally a few minutes into the game if not a few seconds. This BSOD occurred after switching from Windows Vista to Windows 7. I have since switched back to Windows vista but the error still occurred, but I found a somewhat of a fix for it. If i disable TMM in task scheduler, I am able to play up to 30+ minutes without a BSOD, but I will eventually get the BSOD after 45ish minutes of play. Does anyone know of any issues related to TMM and nvlddmkm.sys so I can accurately pinpoint the problem?