Hopefully you can help me. I have an alienware M17xr2. I travel a lot and use the ethernet cord all the time instead of wireless. I am now on an American Military base and everyone hooks up to ethernet cords. Mine doesnt work at all but everyone elses does. I even tried going thru the USB but to no avail. Any suggestions on what might be causing it? It happened before but whenever i go somewhere else it works. I am baffled on what to do.
They may have a different network setup using static addresses or something -- you may not have the correct gateway/device IP set -- ask your network manager for connection requirements. If that is too difficult ask a network user that understands computers what settings are necessary.
Of course, you might want to (and likely already have) try a new Ethernet cable.