Originally posted by Bobberk
I have tried in MM as well, yes. It's exactly the same problem. I open the game from the disc icon on the "Game" tab, and then it stays black.
In Multiman, press Triangle on the game once you highlight over it and go to Game Settings. In the bottom of the cover, you should see some buttons. Go over to those buttons and select BD Mirror and Internal. Then quit Multiman and re-launch it. Once you do that, try to load Black Ops III again.