So I save and quit out of a mission in halo 4. That one where you have the mammoth as backup. Any way I was halfway through it and I quit. Couple days later I go back and try to play it but when the line on the loading screen gets to the end, all the music stops and the game just makes this weird, loud buzzing sound. Not like a high pitch buzz more like a deep low type of buzz. Anyway it does that for a couple of seconds then the game just quits and puts me in the home screen. I played through all of h2 campaign and h3 and hadn’t experienced this. Has anyone else had this happen? Just a campaign mission not working?