Already have done that using not only mint but other distros as well with the same result.To help rule out a settings problem with Mint, can you boot on a Linux Mint USB? I think you said you keep one handy. After booting on the USB, don't adjust any network settings... just run Firefox and see if you can browse the internet. If this fails, I'm going to guess that your modem/router is NOT using DHCP, but let's see what happens.
That I am very well aware of, but it's just appears to be my lot in life where when I obtain an article that others seem to have no problems with the article and it works a treat. An identical article gives me a problem to solve so that it operates as it should. That is why I am patient even though at times it annoys me no end.Yes, but we're learning in the process. When it's solved, we may know better how to reach the solution quicker next time