My hard drive died and I took it to a computer shop where he put in a new one and windows XP, as no one had a vista disc. Since I got it back the blue Fn key doesn't work. Numbers lock works, but all the F keys, volume controls, brightness controls and my crt/lcd don't work at all. Dell doesn't seem to have a driver that I can find. Does anyone have one that would fix this? Is there another way to use the F keys, especially the crt/lcd without having to use the Fn key?