Lenovo P/Y/Z Series :: IdeaPad P400 - Reverse Function (Fn) Keys

I recently purchased an Ideapad P400, and I have noticed that the default for  the keys where  F1 and F2, etc. usually are, are now the mute and volume buttons.  To access the F1, F2....F12 keys, you now have to press Fn + your desired F key.  
 
While I understand many people probably find this useful, I play several games where these keys are essential, and it makes playing the games nearly impossible to play if you have to hold down the Fn key in addition to the desired F key.  So my question is, is it possible to reverse the Function keys?  I would much rather press Fn + F1 to mute than have to press press Fn + F1 to access F1.