Normally can do this kinda stuff ok, but just tried to set up the network with these and it didn't work. They seem to have all their lights green etc, but when I click on my network connections, it is sending packets but not receiving them.
I've plugged it in ok - pretty sure - plugged into wall at modem - cable to my router - plugged in upstairs - cable into pc.
When I did it, my modem and pc were still running and my wireless adapter was connected.
Is my best idea to switch it all off - reconnect it all, unplug my wireless adapter and see if that helps?