It's messy, but if I recall correctly, you need to set up your screen size on settings. Don't recall which and I don't have these games installed since I switched PC's. But I remember there were TWO DIFFERENT SETTINGS, one was pregame, in the same screen and one after the game enters the start menu. When you start the game there is I believe like a picture that says to press a button or click to start. And then it starts on the same screen. So there's some settings on that pre-game start, and others after start.
I DON'T mean the screen where it let's you start the game, change difficulty, change heroine. I mean THE OTHER ONE previous to that one.
I'm 90% positive you changed that in the pre-game settings. Not the game settings.
The only way I know to open the PREGAME settings I believe is restarting the game