Okay, not long ago, I was running my Athlon FX-53 on an MSI K8N Neo2 Platinum with a 13x multiplier (so it was a 200 mhz overclock) to 2.6 GHz. I recently updated the BIOS, and I've found I can hardly OC at all from the BIOS now. If I'm lucky, Windows will boot with a 12.5 multiplier. I know the half multipliers are faked, so basically I can't seem to up the multiplier at all. Now, here's the other part of it, I can overclock quite well from within Windows. Using MSI's utility CoreCenter, and Clockgen, I can get up to 13x multiplier with an FSB of 205 mhz quite stabily. I'm pretty new to OCing, so I don't know what the problem could be? Is the BIOS just f*ed up and I should report the problem and wait for a new BIOS to be released? Are there some settings I'm forgetting to turn on/off in the BIOS that really help the OCing? Please make suggestions you would consider stupid as well, cause I could be overlooking them. EDIT: Also, I'm pretty sure it's unrelated to temperature or voltage, I've played around with the voltages a lot and the temperatures are really cool (at full CPU voltage, it doesn't get up to 55 C, and at regular CPU voltage it's between ambient temp and 40 C).