I have a Toshiba laptop, about 3 years old. I had some work done on it and when I got it back, the function FN key which works with certain commands on the pf keys would not work. Now I cannot change ...

If you take a look at your laptop's keyboard, you'll notice that the top row keys have icons printed above, with "F" and a number, like F1, F2, and so on, below each one. These are known as function ...