i have vista x64 ultimate and cant get shot of these ******* TDR's! 
PC's stable, ran vistas memtest overnight as well as memtest off a cd for 9.5 hours and all clear so not my RAM. no stability probs elsewhere - just TDR's.
removed the drivers (driver cleaner, reboot, safe mode, driver cleaner again, reboot and install each time) and same thing. latest off win updates or nvidias site - no diff.
went back to the 158s and same thing.
is there a way to test the card stability? ram/gpu etc in case the card itself is hosed?
p.s
sys:
E6600
Intel d975xbx
2GB g.skill ram
silverstone 650w PSU

PC's stable, ran vistas memtest overnight as well as memtest off a cd for 9.5 hours and all clear so not my RAM. no stability probs elsewhere - just TDR's.
removed the drivers (driver cleaner, reboot, safe mode, driver cleaner again, reboot and install each time) and same thing. latest off win updates or nvidias site - no diff.
went back to the 158s and same thing.
is there a way to test the card stability? ram/gpu etc in case the card itself is hosed?
p.s
sys:
E6600
Intel d975xbx
2GB g.skill ram
silverstone 650w PSU