Hey guys, I have a new ASUS K60IJ laptop. I'm having some problems with the fn + f10 - f12 keys. Those govern speaker mute, volume down and volume up, respectively. They simply don't work. The fn shortcuts for brightness (f5 and f6) and "display switch" (f8) work, just not the ones that control and mute the volume. Any ideas on how to troubleshoot this issue? Thanks!