When playing CounterStrike Source a few times now and with different ForceWare versions, the system will go to a blue screen with a message about an infinite loop and lists the cause of the problem as nVDisp. Then when I try to reboot, I have a corrupt drive or registry problem and I have to use the Windows XP cd to repair the Windows installation or let it run chkdsk the next time it boots to repair the damage. Every time I switch driver versions I use driver cleaner pro to remove the old drivers before installing different ones. So far, the only game I recall this happening with is CS. But then again I haven't played much of anything else for any length of time lately.