I have atk package installed but since bios update I cant use the fn+F key combinations anymore

As the title says i decided to try the winflash utility, to update my bios even though i had an usb flash drive formatted and with the rom on it but i wanted to see if asus's utility would work so i do the process apparently it failed in verification...

So i was wondering how would one go about overclocking the gtx670m i oced a lot of desktops both cpu and gpu's so i kow the basics, however id like to know if there are any special tools or things to know.

So here is my first performance test, evrything on ultra was just messing arround...sorry for the watermark i just baught the software after seeing it here is a better one same specs same settings 3000 cabbage