FN buttonsFollow

So it is an Asus G74 laptop.
As of this morning, then F-Key combinations worked, but now nothing except the one that will put the computer to sleep.
I have tried restarting windows and that didn't fix the problem. This is the 1st computer I have had FN, F-Keys, Function...w/e they are called.. keys so I don't know if I turned them off somehow or what.
Oh wise computer people, I beg of you, lend me your strength so I may get through this hard time of not being able to turn down the speakers by a click of a button.
-.^

Anyone know how I can get functions back? It is Windows 7 btw.