This problem has been a diagnostic puzzle for me.
Here is what I know:
The device manager shows the network adapter as: "NVIDIA nForce 10/100/1000 Mbps Ethernet"
When I uninstall the device using the Device Manager, after about a minute or so, the machine will BSOD with STOP 7E.
The reported module is nvlddmkm.sys.
With the machine booted normally, I can manually assign an IP address, netmask, defgw, and dns.
However, ipconfig /all does not show the Ethernet adapter. Only two pseudo devices: "Tunnel adapter Reusable ISATAP Interface" and "Tunnel adapter Teredo Tunneling Pseudo-Interface" - neither of which have an IP address. The internet is /not/ surfable.
With the machine booted into safe mode, the "Ethernet adapter Local Area Connection" /will/ show, and does have an IP address, and the default gateway is pingable, and the internet is surfable.
What I am hoping for is guidance, either in learning more about the problem, or more hopefully - to solve the problem and allow the machine to automatically connect to the network without manual intervention.
Thank you in advance for your help.