Plutonium

Hello, good morning, I came to report a problem that happens when I play bo2 plutonium, sometimes my game closes the window and when I try to go back it does not come back, I have to close the game and open it again so I can play again I hope you have a solution that's it

I would like to report a problem that happens to me when entering mw3, it happens that when I enter there is a language that I cannot understand anything, I wanted to know if there is any command in the console that solves this