A couple of weeks ago my xbox suddenly decided not to connect to live. I have it set up through a wired connection to whatever computer is nearest to me and I have tried three different computers, all of which have previously worked, along with 2 cables, both of which also work. If I try to test connection, it fails instantly and also if I try automatic IP settings, the xbox cannot find them. I have tried customer support, but once again received generic answers, which I have tried many times. Any help would be greatly appreciated.