I am new to professional overclocking. previously i only used to increase/decrease the reference clock and that was it. Now since i know that mine is a locked Phenom II 945, i use the Ht and NB multipliers too. I saw this overclocking guide at tomshardware on overclocking locked Phenom IIs. I saw that even though in the Overdrive i had a HT multiplier, i dont have it in the BIOS. My bios is of AIM 6/10/2010 i really am clue less about one option in the "CPU Configuration" menu, that is the "unleash mode" that comes when advanced clock calibration is enabled. i dont know wthat advanced clock calibration is anyway. seeing these, i tried using AMD Overdrive. i clocked it upto 3.6GHz by direct changing the reference clock, and also all other multipliers were default(at max). but everytime i start the autoclock feature, it locks ups and the system restarts. HELP.