Portal 2 sound loop and black screen after loading singleplayer and coop
I had a problem the 2nd time I logged in where I would load up singleplayer and it would play looping sounds and go black right after it finished loading. I fixed it by going into the program files and troubleshooting it, and it worked fine. But now, a month or so later, the same thing is happening, but when I try the fix (setting compatibility mode to Windows XP Service pack 2) it still dosen't work! I started playing coop with a buddy of mine a few days ago, and someone shut off our router, so it crashed our game. He said he had to leave any way so we could play back to where we some other time. But now singleplayer and coop will not work! Does it have something to do with the router being shut off, or what? I've been trying nearly EVERYTHING for 2 days now, and i'm going to snap pretty soon, PLEASE HELP!