I bought the HD 4830 for my pc about a year ago. Installed it fine and worked great up until a few days ago, when I decided to try the ATI overdrive feature. I let it adjust the settings automatically, but when I went to try Crysis on very high settings,there were blue and red squares flashing all over the place.
This freaked me out so I went back and restored the factory defaults. Crysis worked fine. However, when I went back to play Battlefield Heroes, I noticed that whenever I move around, buildings, textures, etc appear really jagged and blurry. Gives me a really bad headache to play more than 15 minutes. When my character stands still, everything's fine.
Anyone know what the problem is? I tried turning AA all the way up but that didn't change anything. Thanks!
P.S. BTW, when I start up the pc I hear a rattling/grinding sound. Could this have anything to do with it?