Playing videos from iTunes or in any form from my windows 7 machine fails. This computer has been reformatted and all firewalls turned off for testing. When I try AirPlay for video games on my iPad 3 it freezes. I am using an airport express router, would an airport extreme fix this? I have tried both gen 2 and gen 3 Apple TV's. Thanks for your help. I did a lot of research on this and am lost. when I say it fails, I mean it freezes.