So that got me thinking, hmmm what was I doing yesterday. (once) Realtek PCI GBE Family Controller: Has encountered a conflict in resources and could not load.(multiple times) Driver Management concluded the process to install driver NULL Driver for Device Instance ID.Just not in the network connections panel. The strange thing is that when I do ipconfig /all I can see the 'Ethernet adapter Local Area Connection', I can see the 'Realtek PCIe GBE Family Controller' in device manager as well, without any errors.
It does not show anywhere in Network and Sharing Center. Today I found myself in a strange situation where my Windows Server 2008r2 machine has internet connection while not showing any connections in 'network connections'.