Hi im very new to this overclocking stuff but my computer runs 3.7ghz by default and when i bought it it said if i overclock it it can run up to 4.2ghz. So i went into the BIOS and tried changing the value of the 370 number to 400 x my 100 multiplier so 4.0ghz but it wont let me change that number. I tried using AMD OverDrive but every time i change the settings and press apply it just reverses what i changed. Any help?