RADEON 9800 SE GAME CRASHES and system crash verry anoying

[torm]

I have a radeon 9800 se 128 mb and i exsperance system crashes while useing anything that uses grafix games ect eg when i start up world of warcraft and get to the loading screen wow error apears and says violation of blah blah and it says the problem was in the WOW.exe as of games such as quake 3 while i play error message apears cannot contine quake 3 and allso says it the quake3.exe i hav tryed down gradeing the drivers to a lower verson and reinstalling windows but it still apears? please help :knock: