Function keys not working

[chuvzky]

i had a person reformatting my sony-viao and now function keys are not working

 

[wanderer11]

The driver isn't installed for it. Go to sony's website and look for the driver.

 

[centaurius]

Yes you need the drievrs fo FN keys... And I believe they have a particular order to be properly installed for them to work, at least my old Vaio (2007) was like that...