Volume hotkey (fn+volume+-) doesn't work

[LtGuy]

Hello,
I recently got this problem, that my volume hotkeys stopped working, (Acer Aspire 5560G) AMD High Definition Audio. I also tryed plug in other keyboard that have's volume hotkeys but still doesn't work.

 

[LtGuy]

Still need help

 

[boohbah]

there is an answer here about the Launch manager ,maybe it will be of some use.

Acer Aspire 5742 Fn Key not working properly? - Yahoo! UK & Ireland Answers