I would guess the window was created outside of the viable area. This was reported from time to time in the past for windows based systems.
Try giving the window focus via taskbar (e.g. click where you get the console, but use "show/hide") and hit "alt + space" -> "v". Now you should now be able to navigate the window with the arrow keys back into the viewable area. Once its where you want it to be, hit enter.
Maybe try it with a different programm first to understand what you are doing blind.
Hey! That got it. As soon as I pressed Alt + Space a popup came up so I just hit maximize and I could see the wallet again! Thanks!