Originally Posted by
AOD_Blankwindow
Have you deleted the old driver file from systerm 32, uninstalled the NIC via hardware manager, and then reinstalled it fresh?
I know you said you tried to newest version of the driver, but didn't specific if you had completely removed the old. I've seen where windows will occasionally chose to use the driver filed already in system 32, even when newer one is presented to be installed. Well I have seen XP do that anyway. I haven't seen windows 7 do it as of yet, but since it is an MS product, I consider the bug not showing to be the fluke lol.
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Since you mention her working wiping it to their way.
Did they maybe edit the host file, or install some kind of tracking\monitoring\blocking\nanny software as apart of their default package? That could be blocking the nic from DHCP?
Also had a morning caffeine thought, check services (run -> services.msc) and make sure the DHCP client service is running. that actually come to think of it could easily explain this situation if that service had been disabled somehow.