You can remap any keypress that reaches Windows by editing the registry, as described here: https://www.experts-exchange.com/articles/2155/Keyboard-Remapping-CA

You can remap any keypress that reaches Windows by editing the registry, as described here: https://www.experts-exchange.com/articles/2155/Keyboard-Remapping-CAPSLOCK-to-Ctrl-and-Beyond.html https://www.experts-exchange.com/articles/2155/Keyboard-Rema... (2011, but works with Windows 10) Unfortunately many "Fn" keys are handled purely in hardware and Windows can't see them. But it might be worth a look, if you haven't already tried it. AutoHotKey is also useful, especially if you want more complex hotkeys.