I've just setup a new Windows 7 Pro PC on our work network, and it has lost its internet connection completely, although it can see the rest of the network. I'm using DHCP -the network and sharing centre shows a connection form the PC to the network but a between the network and internet. All other Win7 PCs are Ok. When I click on Diagnose it says ' A problem is preventing the troubleshooter from starting' The detail says "an error occurred while troubleshooting c:\windows\diagnostics\system\networking\. Error code:Ox800B01DE.
I've tried - turning off IPv6 , doing a system restore back two days, rebooting, removing the network cable so it redetects the Ip.