Error starting the game

[maimaimaimai]

Hello, I am getting a blank white screen whenever I open the game. I cannot use F11 to fullscreen it, my cursor is the BO2 cursor (as expected) and I can hover over icons and click on them. When I press on a button in the window it simply darkens the edges and I cannot exit it.

Please help!
(If its important, I "borrowed" the game)