Problem with ATI card!!(infinite loop)!

i have the same issue...i have a powercolor ati HD 3850 (512) and pretty regularly get random crashes in both WC3 and BF2 - but they dont seem to be load related, cause they happen at times when FPS is high and nothing is going on at all.

everytime it seems screen freezes, sound starts repeating the last second's worth of things said or sound made, and then i get some crazy artifacts all over the screen and usually all I can do is force restart. from time to time the system will recover though after about 10-15 seconds, but this is rare. i made sure my powersupply is adequate to drive the card, and updated drivers, but i cant install the latest version that the ATI site leads me to because when i go to install it tells me it isnt compatible with my hardware or software or something.

this is the error I get in my event viewer "The driver ati2dvag for the display device \Device\Video0 got stuck in an infinite loop. "
I also get this "Error code 000000ea" which when i look it up is basically the same as what the other one tells me - that either my vidcard or vid driver is messed up.

any ideas?