That may be a problem with the keyboard display. My problem was that the RAM had broken spots but your issue can be solved with Microsoft Keyboard Layour Creator (MKLC). Download it here and play with it: https://www.microsoft.com/en-us/download/details.aspx?id=22339
If you have any doubts when using it, google them and if you can't find anything, tell me on Discord and I'll help you :)