I've been having this problem where I can connect to xbox live perfectly and play online, but when I put the disk game ( which is GOW2) my screen freezes completely, I've tried putting the game and then signing in but as soon as I am the screen freezes and the xbox console stops reading the disk. I know theres nothing wrong with the game disk because I share my xbox with a friend and he doesn't have a problem signing in with this game and just plays. He told me to erase the cache/memory of this game, and I did, but nothing happens, I still am having the freezing screen. Any helpful tips? or should I just replace the game?