I've installed windows 8 via bootcamp on my 2011 mbp and installed the drivers from apple. But the brightness(backlight off my screen can't go to full, except the first seconds when booting into windows. When is push the function keys the brightness doesn't go higher. Because the windows brightness menu says that the screen is at full brightness. When I lower the brightness (In the menu or with the buttons) the screen goes completly black when the bar says that the brightness is at a quater. Does anyone have any solutions? If you guys need screenshot I can provide. Thnx in advance!