Is my video card crapping out?

[Johnny Knoxville]

I have a Hercules 4500 (yeah i know its crap, its around the equivalent of a Geforce 2 ultra) kyro 2. After i've switched on windows xp for a long time if i double click on RTCW it gives me a BSOD or sometimes goes into the game but i can't see the main menu the all screen is gray and its flashing. Also the graphics in RTCW like a river look wrong, it never looked like this before.
Should i try increasing the AGP voltage (i have this option in BIOS)
Sometimes when i leave the screensaver on for few hours it just freezes.
btw, this card is not overclocked.

[Johnny Knoxville]

ok now graphics in wolfenstein are ok, changed the setting. but what about the rest of the problems?

[Codeman05]

Have you overclocked your cpu/fsb??

[Johnny Knoxville]

nope nothing is overclocked

[Codeman05]

thats pretty weird then, Sounds like your video since your AGP and CPU are running "stock"