So I had a friend that I play Call of Duty: Black Ops all the time with, then one day he just stopped playing multiplayer. I thought he just didn't like it, turns out that something happened to his game and he cannot play Private matches and Search and Destroy. The only game modes we play. So all I can do with him is play zombies and he's started to get depressed. Is there anything anyone can do to fix his problem? His GT is [mod removed]. As a P.S. this has been going on for a couple weeks now so he has restarted his Xbox multiple times.