Have you tried using a driver cleaning app like XDC
? Uninstall any video/physx drivers, reboot in to safe mode and run the driver cleaner. If you are upgrading from something like an ATi card clean those drivers out too tho you should definitely do a clean windows install if so.
As for the 295, I absolutely love it. Its scary fast even compared to my OCed 280 and everything is smooth as butter. Cores run around 50c at idle and i've seen a max of 88c during crysis runs. It is loud however; 40% fan speed(idle) sounds like 65% on the 280 which it never came close to hitting and this hits 70%+ all the time. So yeah, compared to it is VERY loud. I figured if it was gonna be screaming like that an OC wouldn't hurt