my new sony vaio SVF1421X2EW dosent obey the function keys....

[ronvaio]

i have installed each and every update of both sony and microsoft..

still...my laptop is cheeky and not minding function keys ,mute,volume control,brightness 

[Catmambo]

Hi - Have you tried a system rollback to when it was working, you may find the system created a backup point?