[Request] Unlock bios HP Pavilion DM4-2090la

Hey Guys, I need your help!!!

I'm in trouble with my notebook, because the switching graphics wouldn't work well!! in the bios i can only configure "startup" and "security"!!

Model pc: HP pavilion DM4-2090la
Bios version: F.16

http://ftp.hp.com/pub/softpaq/sp59501-60000/sp59880.exe

I need open the advanced tab and the option where I can set the "fixed" status for the dynamic graphic switching.

thanks!!!