Download and run 3DP Net (http://www.3dpchip.com/3dpchip/3dp/net_down_en.php).
No noticeable changes. I still have my wireless adapter under network adapters in device manager. Still no wired ethernet controller. I'm 100% that the cable works.
Even when i went to dell to download the driver I need, once downloaded it still hasn't shown up in device manager.