http://superuser.com/questions/605114/annoying-fn-keys

http://superuser.com/questions/235796/how-to-permanently-lock-the-fn-key-down-so-it-is-active-on-my-laptop-keyboard

http://superuser.com/questions/590417/how-can-i-make-my-laptop-f-keys-work-as-f-keys?lq=1

http://superuser.com/questions/337170/f-keys-are-alternate-by-default-on-a-gateway-toshiba-laptop?rq=1


http://superuser.com/questions/279809/hp-laptop-f1-12-keys-inverted-with-fn?lq=1

http://superuser.com/questions/650672/how-do-i-use-the-function-keys-on-windows-8?lq=1

and possibly countless others.

Could someone make a canonical CW question with instructions on restoring the function keys back to how God intended them to work for various laptop makes?