Is your landline phone working?
Is the router plugged into the master socket, or an extension? If it's an extension, what happens if you plug it in at the master? You don't need to move a computer to see if the right lights come on.
Have you powered off the router, and anything that connects physically to it, then unplugged the every cable at both ends and replugged them? If not, try it.
You can do this one connection at a time so you can't get mixed up, and if you have a dangly filter the same applies - get that completely detached from everything then reconnect it. Then power up the router and see what happens.
If that fails, you need to remove the master socket faceplate and try the router into the test socket. If you have a big filter plate between the faceplate and the wall part, that has to come off as well to get to the test socket.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 54999/14466Kbps @ 600m. BQMs - IPv4
Edited by RobertoS (Wed 15-Feb-17 14:50:38)