My apple tv has suddenly stopped working. I have attempted to restart using the remote, but it does not work. I have also tried resetting by unplugging for 30 seconds. When I plug the unit back in, the apple icon appears, however in goes away after 10-15 seconds. After that I just get a blank screen. I have read other posts with a similar issue and some people have had success in correcting the issue and others have not. I fall into the others category. What else can I do and why did this happen?