That old machine with the XP on it is a PIII . Doesn't have more than 1 LAN integrated on MB.
On the (other) PC and on the Laptop where I have W8, I disabled evverything: virtuals, wireless, but the result is the same.
On the P3 I had ESET with password on it and couldn't get the firewall off, so I disabled the service from service.msc and then I recorded.
Is it possible to have another IP address, rather than 192.168.1.1? If so, why isn't it detected by the device discovery app? Something strange is going on here!