mreko to Cable Forum
If the modem will not offer a connection to either the router (assuming that is a cable broadband router - can you post the model number?) and won't speak to the ethernet port of a lappy (I assume the lappy network connection is enabled in the netowkring settings), and you've done the power off power on cyucling for the modem, only two things are left:
The ethernet cable is at fault: can you try another - straight, not crossover
The modem is at fault - I've seen it happen. If the latter phone faults who should send an engineer to replace it. Just say you need to use an ethernet connection but you can't as nothing will connect, including different computers.