Sorry for my language but I'm from Belgium .The problem on my laptop is that I cant change the brightness of my screen ,I need to push a Function key and the key with the symbol of Brightness low or High .All the other function keys are OK example for change loudness and so on.....
I hope that someone can tell me what is wrong with those two buttons( brightness higher or brightness lower ) .
Thanks to you all who want to help me .
alberke (Belgium) . ::)