I'm running windows 8.1 and I'm 50% sure that it has to do something with my drivers. The Ethernet cable works fine and the Ethernet port seems to be working (it lights up which I'm guessing its an indication that it works can not be too sure though) I don't really know what drivers to download to get my Ethernet working. The only thing that shows up under the Network Adapter is "VIA Rhine III Compatible Management Adapter". I've upgraded my Dell Precision T7500 if that helps.(First "Computer Build" ever.) Thanks for your help in advance means a lot!