All TCP/IP settings on the laptop are the same as before before it stopped working, so nothing has changed there. I then tried the laptop on ports 1 & 2 of the router, still showing the lost network icon.
I then got my work laptop out and tried this on ports 1 & 4 of the router - it too is showng lost network icon. The work laptop was working fine a couple of weeks ago, as I was using it on port 1 for a couple of weeks.
Used cables connected to ports, didn't use same cable for each test.
Appreciate any help.