toshiba satellite pro a120 hot keys screen brightness problem

Hi i recently rebooted my a120 i went onto the toshiba site and downloaded the drivers, now i have a problem where the stiky keys will not install, so i am stuk on an incredibly dim screen even when plugged in on the charge, the screen is alot brighter in the bios and before windows boots. Is there any way i could perhaps download the correct hot keys configuration or maybe even design my own? If this isnt possible then could i just alter the screen brighness some other way through windows? editing the contrast settings and adding more gamma makes the screen more faint then bright and that trick doesnt work for me. I used to just hold fn & f7 but that no longer works, any help would be greatly appreciated