Im having very big trouble with my Black Ops 1.
When i try to open my multiplayer it opens steam's loading screen and soon that vanishes and it wont open. It also says in steamchat that i would go play Bo1 and then turns me back to Online. Yesterday i was still able to play Bo1 normally without this, and today updated my graphic card and after the update, i have been able to play it. Please note that im not Super-good with PC language. But personally i think it was the update that killed my Blackops
My Graphic card is GeForce GTX 660