Hey guys, whenever i try to launch BO2, it immdeiatly stops responding. i waited for an hour to respond, but nothing happend. if someone can please help me, that would be amazing. +1 respect for them. PLEASE HELP ME

Well that's a strange issue but first I would check to make sure you are running steam as admin, If that doesn't change anything try in your libraries right clicking Black Ops 2 and going to Properties, then go to the "LOCAL FILES" tab and hit "VERIFY INTEGRITY OF GAME CACHE...." it will check your local files for errors and if it finds any it will fix it, otherwise it will say it was verified correctly. If that doesn't work try deleting the local files and re-installing the game. Then in the case that doesn't even work your gonna have to call Activsion's customer support line and talk to someone there:
1.800.225.6588

I remember PCdev saying something about that happening because of having two sound drivers going on at once or something along those lines.

i found the problem guys. thanks SOO much for trying to help me    nahhhhhhhhhh jk but after a couple days i was thinkin Y U NO HELP ME?