allthatismatt < XXXX@XXXXX.COM > had this to say:
My reply is at the bottom of your sent message:
Is your Fn key locked? Just an idea... If not try deleting your keyboard
from the device manager and rebooting so the operating system can reload it.
I don't know of any SPECIFIC malware that bothers the function keys but
there could be some so you could scan for any malware with your antivirus
and antispyware applications to see if that makes a difference if the above
Signature changed for a moment of silence.
Rest well Alex and we'll see you on the other side.