Question My Fn button stopped working

[K1nGs7oN]

i got the thor 300 tkl everytime when i plug the keyboard into the pc this happens every button is working expect the Fn one

View: https://www.youtube.com/watch?v=8EfyufO4FH0

 

[iMatty]

If i recall correctly, when i removed all the key caps from my razer widow chroma, there was no light under the FN key.
I don't think there is one.

I might be wrong here, other members can correct me on this.