GigaMan I'm sorry to hear that! Do you have a game pad or another keyboard plugged in? There could be a problem where the game is taking inputs from it. You can press P to switch between full screen and windowed, not sure if that will help anything. Is it possible for you to take a video of what's happening?
If you want to join the Discord, it will be easier for us to chat there and work out the problem: https://discord.com/invite/5fnWhA2