My F1- Mute, F2-Sound Decrease, and F3-Sound Increase buttons won't work on my new Dell™ Inspiron 15 Laptop Computer i5559-4013SLV

Hello Everyone,

I am looking for help on how to fix my problem.

My F1- Mute, F2-Sound Decrease, and F3-Sound Increase buttons won't work on my new Dell™ Inspiron 15 Laptop Computer i5559-4013SLV.

Some info. If you need more, let me know I'll post back asap.

My sound works fine. 

I've had the computer for less than a month.

Everything else works fine, I just can't get these *** sound buttons to work. I have to manually go to the taskbar to raise or decrease volume at all times.

Thanks!

David