Ive got an Abit UL8, Athlon64 3200+ Venice, and two 512 Corsair XMS (DDR400) sticks. Got good cooling, temp's are below 50c even at full load, but I am gettin this strange problem. I can up the cpu to 2.5ghz and it runs without a hitch.I get a "system disk failure" upon rebooting after the systems warmed up though, setting it back to stock speeds and it boots fine again. This board doesnt have all the tweaks id like it to, but I can set the ram to DDR333 so when im uppin the cpu fsb it stays close to stock speeds. The HTT option on this board has 200, 400, 600, 800 and 1000. I assumed this was the multiplier setting and ive tried going all the way down to 200 to see if thats the issue and it doesnt change. Think its just this motherboard? Its fairly new and cheap, uses the ULi chipset and its only got the initial bios release out so far. I guess im just wondering why im gettin the "system disk failure" error.