Wtf is up with my BO2 campain
So I'm playing black ops 2 campain then I have to get off for a while. So I turn the game off but when I come back to play it about an hour later the game doesn't open properly. I can hear the music and a tab at the bottem of my screen says it's open but it won't fully open. I click on it and it tries to open but it closes right back down. I've only had this game a day and downloaded it straight from steam. I uninstalled and reinstalled it and it still doesn't open right. If someone could help me I would be extreamly greatful!