I'm posting this on behalf of my mate (who'll be joining up & in shortly).
He's running 64 bit Ultimate build 7100 over a PPPoE connection, and he's getting an error 651 while trying to connect via LAN 1. The motherboard has dual gigabit LAN. XBOX 360 is connected to LAN2 and is connecting ok through media extender.
He was up until recently connecting his PC via wireless adaptor which worked fine, but since installing a new LAN cable he's been getting this error.
LAN is identified as a public network, and he is unable to change it to home. When enabled, wireless is detected as home, and can be changed to public.
Any ideas on what could be the problem here?