unlock InsydeH2O Switchable Graphics option

Hi ,
I have an acer aspire 5742g374g32mnkk with damaged ati radeon 5470M graphics card (no display on lcd , vertical lines on external screen when using vga port).

i was wondering if it's possible to use the Cpu i3 370M intel hd graphics card ?
i tried to install it's drivers (intel hd graphics from acer and intel) but i get a message saying that my system doesn't have the minimum requirements.

i also looked at bios settings but found nothing , is the option locked ? do i need a modded version of insydeH2O bios to unlock the option ?

my lapptop specs : Cpu i3 370M , chipset Mobile intel HM55 Express, Gpu ati radeon 5470M.

ps : there's nothing indicating that i have intel hd graphics ( device manager , hardware monitors ) except the piece of info that the cpu i3 370M has it ?

Help me please i'm kinda desperate

Thank you