MacBook Pro: FN keys not working
Hi everybody, I'm having a problem with my MacBook Pro built-in keyboard. The model is 13" mid-2012 non-retina. The fn keys between F1 and F9 do not work. Instead, the "esc" key, the keys between f10 (the volume ones) and eject work perfectly. I tried reinstalling Sierra, resetting NVRAM and SMC several times, but none of these solved the problem. I am also having this issue in the Windows partition. Can you please help me?
Thanks in advance
MacBook Pro, macOS Sierra (10.12.3), null