Win 8.1, no mouse in the game panel

[RPS69]

Well, I attacked it on the windows part, and I got success at least on my problem.

There is an option on:

SCREEN RESOLUTION
Make text and other items larger or smaller

Originally it just shows you a bar with a zoom level, that appears to be centered. If you select "Let me choose one scaling level for all my displays", you will learn that it is set to 125%

Checking this and setting it to 100% solved my problem, and also allowed mouse use again.