One night, I was starting up my Civ 5 BNW copy using steam, when all of a sudden, the music stopped playing and the game became unresponsive. I also found that when I moused over a certain part of the screen, my mouse changed from a spinning globe to my regular mouse. I uninstalled and reinstalled the game on steam, but it's still not working. I love Civ 5 and really want to play it, but I can't because of this glitch.