I know I am posting this again but I am following the advice of Xbox live support. My son's console has been banned and it is not modded and he does not play pirated games. I also followed the advice of a forum member and asked him does he join modded lobbys which he swears he does not. I ran Xval and the error message was Failed AP25. I believe a scratched disk can trigger this message. I have one very sad boy and hope that th powers that be look favorably on our situation.