@tydinbrandt could be an issue with the laser. I would suggest to clean that first. Anything after that would require a replacement. Eiterh of teh complete optical drive [guide|3358] REMBMER that "the DVD drive works only with the particular game console it is installed in" it's still possible but will require a bit of work. OR you can try to replace the laser assembly. Great guide for that can be found [https://www.sosav.com/guides/game-consoles/microsoft/xbox-360/laser-lens/|on here]
Of course, you could also elect to just continue to play rock band and skip dead island altogether ;)