I thought my old 9800pro was maybe the culprit at first.....maybe was getting hot. I have an aftermarket fan on it already.........opened the case and blew air on it with a fan.....still freezing. Sims 2 and COD2.......afraid to try every other game.....lots there. So today I buy an ATI X800XL AIW (AGP) thinking cooling issues would be gone and games would run top notch. Welllll.......COD2 looks phenominal, BUT it STILL freezes. I have nothing OC in any fashion, bios or software.......I did have my ram set at 1.5-3-3-6 from 2.5-4-4-8 but since set it back to stock. I have 3 case fans so I am thinking heat is not an issue. I've run Aquamark to see if it will freeze it, nope. Dxdiag shows all normal. I updated my mobo chipsets and made sure my dx was fully up to date........and have ONLY the 6.1 drivers back on the system now to see if there was an issue with the TV software......nope. Keeps freezing. Any ideas ?? Oh yeah, with the ram set lower, the PC still booted normally and everything ran......just figured I'd go back to normal and see. Mobo is gigabyte GA-K8NSC-939.........OCZ ram 1g running dual channel, AMD64 3500+ cpu.