after disabling the toshiba bios loader, upon starting the laptop it will directly open the windows startup and no toshiba bios loading, but when i try to re-enable the bios by pressing F2 upon opening the laptop it won't open the bios setup. i tried pressing F1 - F12, also the delete and any other Fn+F1 - F12. Please help on how can i re-enable the bios setup on toshiba l645.. thanks in advance