Mouse freezes on start

[symphonia117]

When the game does not run in full screen it works perfectly. But whenever it is in full screen that is what causes the mouse to freeze.

When the game is running in full screen and the mouse has frozen I tried to use the keyboard to navigate back to the icon on the task bar and click on it but nothing happens. All of the other settings don't play any part in this, only the full screen vs windowed. Because of the nature of this game, I don't want to play it in a windowed mode because then bright colors surround the dark game window. I think it takes away from the effect of being in a dark room playing a horror game. I want this game to scare me. Windowed mode takes away from that effect.