When I try FN "A' nothing happens. I am trying to figure out if that is part of why my keyboard back light is not working. Any suggestion? PS every thing else FN wise seems to work just noi FN a , FN f3 or f4 response.

OK (I did search but could find no answer to this). My Keyboard Backlight does not come on, every other fn + f(#key) works but f3 and f4 no light flicker at boot no back light period. I reinstalled ATKACPI ver 23 (latest) but no luck. This is a bra...