Driver Errors need help!

I have a huge problem, it started at first in SUPCOM the screen would flicker black and i would get a message "Driver has stopped working and recovered" ok.. so i press on... it contiunes to happen in supcom for another 5 times and when i try to play another game it completely crashes the game.

I updated the Driver the 169.28 but no luck. So i abandon supcom and play some other games like COD4, MTW2 and CoH, but now i get that problem in every game where is didn't use to happen at all! The screen flickers black the game stops working for 3 seconds, then it recovers and it playable again, what i noticed just recently when trying to play MTW 2 it be fine for the first say 20 mins give or take then the errors occur.

Well im lost at what to do? updating didnt help, i uninstalled the driver, use driver CLEANER-PRO to remove it, then reinstalled and still the same problem.

i am at a total loss of what to do? any help, ideas, suggestions? i sucks i cant play anygames!

Look at Sig for Computer Specs!(using Windows Vista ultimate 64-bit)

no, its a new system build, and i didnt get these errors until yesterday.

had it for about 4 days now everything was fine, but when playing supcom as mentioned these errors started occuring and now it spread like a dieases to where i cant play any games