Every time I install XP, the first time I boot it up everything works perfectly. All the drivers are properly installed, the keyboard fully works; etc. Then the problems start... The sound randomly stops working, the extra functions F1, F2, F7/8/9, F10/11/12 stop working, and more. Is there a fix/update for this? I'm mostly just concerned with the function keys not working (I can't adjust brightness or volume with my function keys), since that was the most useful thing. Help please, and thanks. P.S.: This is my THIRD install of XP. Same problem every time. Have already tried reinstalling drivers.