If you have media keys that don't seem to work, it may be related to a Windows service.
James, A BIG THANK YOU. This saved my day. After reading lots of websites and trying a lot of things, finally I could resolve this problem of FN key not working in my keyboard.
K70 RGB Media Keys Not Working
in Gaming Peripherals & Audio Troubleshooting
Posted
James, A BIG THANK YOU. This saved my day. After reading lots of websites and trying a lot of things, finally I could resolve this problem of FN key not working in my keyboard.