Windows 7: MW3 problem, game suddenly exits

The game exits on its own without any error messages on my brothers windows profile, but on mine it works fine.Is it because i installed it on my profile?

mabye his profile is corrupt, when you installed it did you put that it was for all users? Some games/programs give that option when installing but i'm not absolutely sure it's that. And by profile you mean your windows login right not the mw3 profile. Anyways what i would do is make him a new profile and see if the same thing happens and if not something is up with the other one or he doesn't have rights to it possibly.

If you are sharing your steam account with the game with him, then that most likely is the issue. You need to buy another copy for your bother enable for him to play without problems when you play. However, if you let him log onto your account and allow only him to play during the period, then that shouldn't be a problem.

thanks