Desktop machine operating on Microsoft Windows 7 Ultimate 64-bit Service Pack 1. Ethernet cable is plugged into the computer on one end, and into the WAN port of the wireless router on the other. There's another ethernet cable that connects the router and the modem, so I do have connection on all my mobile devices via Wi-Fi, but I can't get the LAN on the desktop to work.
The network adapter on it is the IC Plus IP100A 10/100 Fast Ethernet Adapter, and the Device Manager is saying that the driver is up to date.
When I run Network Diagnostics for the Local Area Connection I get the message that a network cable is unplugged.