Ok (well, not ok), but did I describe quite well how your devices are connected (the modem router can give you a connection through the ethernet cable or wirelessly)?Do you get the connection from the phone line wall jack -- phone line splitter -- rj11 cable -- modem/router? Or what?
When the internet disconnects, I have tried using the ethernet wire to access the internet. The ethernet wire is not recognised when looking at the network adapters. Windows does not recognise it as plugged in.
Or do you have another type of arrangement (collocation/layout/disposal) about your connection?