@ravenlewis could be that the lasers are getting weak. Could also be the game itself. Since your Xbox works with other games, I would think it is the game. Of course, you can also replace the optical drive [guide|3358] but rememer there are special tricks because "the DVD drive works only with the particular game console it is installed in". You can transfer the controller board to keep the key.Check out [https://www.youtube.com/watch?v=XuLOaX_CZS0] for the How-To.