"This site can’t be reached" after PC off > on. (3 replies)

Hello,

after I turned PC off and than turned on, Ive got this message (Chrome):

This site can’t be reached

The connection was reset.
Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics

ERR_CONNECTION_RESET


If I switch internet off, I can reach my www project.

Where is problem / what happened?

Thanks you