It sounds like you are looking for a network. If a node can not find a network to connect to, then it cannot connect.
The answer is An embedded chart
Answer:
Check the network icon (or wireless connection settings) to see if you have Internet access. ...
Check for changes to proxy settings.
Check the network cables if your computer is wired to the router.
Reset your router.
Check your firewall or security software.
Hopefully this helps.