While I can't think of a solution for the mouse not showing up, you can plug in a controller and then use the D-Pad to select an option and get pass the intro screen. You may be able to use the controller to go into Configuration and then in Display Settings maybe try using a different screen mode. Maybe go from Full Screen to Borderless or vice versa. I'm not sure what else could be causing this problem, as I haven't heard of it before.