в биосе такой хрени нет.. за это отвечают горячие клавиши.... вот список.. для твоего ноута.. тебе нужен 4....читай мануал.. там все. .
Fn + Esc:Turn on/off the integrated camera.
Fn + F1:Enter sleep mode.
Fn + F2:Turn on/off the backlight of the LCD screen.
Fn + F3:Open the interface for the display device switch to select this notebook or an external display.
Fn + F4:Open the interface for display resolution settings.
Fn + F5:Open the interface for integrated wireless devices settings (on/off).
Fn + F6:Enable/Disable the touchpad.
Fn + F9:Start/Pause playback of Windows Media Player.
Fn + F10:Stop playback of Windows Media Player.
Fn + F11:Skip to the previous track.
Fn + F12:Skip to the next track.
Fn + Insert:Enable/Disable the scroll lock.
Fn + PrtSc:Activate the system request.
Fn + Home:Activate the pause function.
Fn + End:Activate the break function.
Fn + / :Increase/Decrease display brightness.
Fn + / :Increase/Decrease sound volume.
http://download.lenovo.com/UserFiles/UserGuide/en/User'sguidesandmanuals/G460-G560/LenovoG560HardwareMaintenanceManualV2.0.pdf