Win 8.1, no mouse in the game panel

[RPS69]

It solved your problem too, or you are just about to buy a wig?

There was a thread about this new update forced setting posted somewhere. After loosing a lot of time trying to call guilty the catalyst driver, I started to suspect it was innocent after your post! When you answered you got a nVidia with a problem similar to mine.
I changed my troubleshooting approach, and voila!

So, thank YOU!!