I installed Windows 8 Pro on a Zotac Zbox AD03 3 days ago. The installation went fine and everything, including the network and internet, worked just fine. The network contains 4 Windows 7 machines, a network printer, a Buffalo NAS, a Windows Home Server,
a 16 port switch and a Motorola combo cable modem (DOCSIS 3.0) and router. The new computer with Windows 8 could see everything and appeared to function perfectly with normal internet access. After powering it off for the night I restarted it the next morning
and found it could only see the Windows Home Server and one of the Windows 7 machines. It reported that it was not attached to a network and when I tried to connect I got error 651. I did a complete new install and it still could only see the Windows Home
Server and the same other Windows 7 machine and still get the error 651 message. What could have happened during that power down/restart to cause it to lose network connectivity? How do I fix it?