Have tried resetting router and box to no avail.
I run the network test and get the following results
LAN adapter - OK
Local - disconnected
DHCP - OK
IP address - unconfirmed
Nameserver - unconfirmed
I think it is something to do with the link I posted above, possibly about the box losing it's MAC address.
Any advice, help welcome. Box is over two years old now, so out of warranty