After uninstalling Symantec Enpoint Protection (manually) one computer (Windows XP) has an inoperative NIC; it shows up in device manager as conflicted.
I tried doing a windows repair from CD, which did not improve the situation. When I went to reinstall the drivers, driver installation failed with:
Cannot install this hardware
The system cannot find the file specified
I've deleted the NIC in device manager without improvement.
Delete the following registry value and then restart the machine:
I found the solution in a forum. The original discoverer had to make a very expensive call to Microsoft support.
You may need to remove the registry entries that still point to that NIC, and also change the card to another slot for good measure.
Oops, seems Justin beat me to it.