You cannot successfully ping $127\mathrm{.}0\mathrm{.}0\mathrm{.}1.$ What does this mean?

It means there is a problem with your computer's network software or hardware.

It means there is a problem with your network cable.

This is normal because $127\mathrm{.}0\mathrm{.}0\mathrm{.}1$ is not intended for pinging.

It signals a problem with the Internet.

It means that your system is OK$.$