Mouse is fine, this is the ONLY program where problems are occurring. (Yes, Windows)

It's jpg images I'm working with.

I can't get to the image-mode menu selection due to problems I'm having.

P'shop and LR I purchased via digital download. I haven't got any customisation to it so would be happy just to kill it totally and re-install BUT I can't find my licence key etc....

Sigh.