Ok, since I had figured that maybe her Windows installation was broken, I reinstalled the computer. However, the integrated LAN is still lacking in a physical address. It can't connect to the router, and there are no lights on in the ethernet port when you plug in a cord, but the router is somehow still assigning an ip address via DHCP.
This same ethernet port worked fine with my old router. However, I am almost positive that the problem is not my router since every other computer I have tried works fine with it.
So I decided to buy a Dynex DX-E101 ethernet card to remedy the problem. But the card is recognized by Windows and installed, but it can't start. I have tried updating the driver, but all it says is, "Windows cannot find a better match for this device than the driver you already have." Or something to that effect at least.
The lights are on in the back of the card, and I tried downloading more drivers off the internet but I can't figure out what's wrong with this god damned computer. Anyone know how I can either get the integrated chip a physical address or get the PCI card working?