oh yeah, i've done that multiple times actually. no matter what i do... disabling speed step, c1e, etc.. and reseting all the settings i had before i flashed it, it refuses to work. what i don't get is how when i've changed the settings as in putting them to my overclock, and i boot to windows and see they didn't take hold, i go back to my frequency settings in bios to reset them, and they are at the overclocked settings! and even more, when i look at my chipset properties, it shows my cpu running at 4.5ghz which is my overclock... then i boot to windows, speedstep comes back on and it is sitting at stock settings. how do i flash back to older bios? i have the asus bios flash utility and it won't let me flash to earlier dated bios, is there a utility or a guide you know of to do that? any help would be greatly appreciated.