HyperV machine missing network card after restoring VHD on Windows 2012 server
Problem You have restored a VHD or moved it to a new HyperV 2012 Server from a 2008 server. When you restore and recreate the HyperV machine and start it up, it has no network connectivity. Running ipconfig shows media disconnected with no network card. Device manager shows no network device and Other devices showing.