how to unlock the volume of my keyboard? i press something and i cant figure out what key i press on, and also another thing its twice for to happen that if i install trial version on my imac it wont be installed anymore? why? last month i can still install but now i can't this there application that conflict on this all trial version? honestly i'm **** off of using the mac now it gives me a lot of headaches this is the first time that i used mac, i'm a windows user ever since i knew computer