As a long time Mac user, I've recently acquired a Surface Book. As I'm in the UK, I use English (UK) as my display language, but the keyboard is US (the computer was purchased in the US). All this seems logical and I had the system working for a while and then for some reason, it reverts to the UK keyboard even though that is not an option under the available input methods or under the keyboard in Settings. I don't understand how the system can use a UK keyboard when technically it isn't installed. I even tried removing the UK display language, but that too remains despite it not showing up in the Settings panel under Languages.