function keys not working

[Allora16]

so only the the brightness and black out function keys work but not the volume function keys or anything else i have tried to go through the control panel to fix this but it has no options for the function keys. I was just wandering what to do about this because i do use these keys very often and it would be a hassle to have to use the touch pad every time i want to bring the volume down.

 

[DasHotShot]

There is normally a button which allows you to toggle between "fn" keys and standard keys. It is normally located between left ctrl and alt.