The xbox is hard wired to my router and I use it mainly to stream from video server. I have been doing this for over a year. Very recently after the last update my Xbox 360 will not make a network connection. When I go to the Network systems tab and choose the wired connection option, I get the message to plug in a network cable, so I cant even re-set the network settings. I checked that cable is snug several times and also tried plugging that cable into my laptop. The laptop connects immediately and I can get internet through it. So I believe the cable, router and modem are fine. Any ideas other than service call?