Resxt hello,
Im not able to identify what is causing this problem, I think I havent install anything new.
The game used to work perfectly and suddenly it stopped.
It is very strange because it just a problem of bo2, because mw3 works allright. I have already tried to reinstall everything but it didn't work.
You say something about device plugged in, I used to connect my laptop to a tv in order to play bo2 and it used to work perfectly weeks ago.
Thank you very much and excuse me if I dont express myself clearly in english.