OK, so first I had the FSB at 287.5 to make it 2.3GHz, with voltages default. I used Orthos to test for stability. It ran for 8hrs straight no errors or warnings. Next I put the FSB at 300 for 2.4, and it froze at random times. So I upped the voltage on the VCore to 1.35v....still froze at random times. I did not run Orthos for this speed. What is weird is that, I then put the FSB to 312.5 for 2.5, and Orthos ran straight for 11hrs, with no errors or warnings. The voltages were, VCore set to 1.35v....I then proceeded to set the FSB to 325 for 2.6...VCore was 1.35v, and froze and rebooted at random times. So I upped the voltage on the northbridge from default to 1.39v. Same result...froze and reboot at random times. And when I tried to go back to, FSB: 312.5, it didn't post. I pressed the reset button...it then says system boot fail. So I load defaults, and then put the settings I did before, for 2.5GHz, because that was the last time it was stable. And now I don't what to do. Current is 2.5GHz, FSB at 312.5, VCore from default to 1.35v. I'm sorry for the long post, but I'd greatly appreciate the help.