A very common WiFi error message beside the router icon in the Networks sidebar is “Limited access” or just “Limited.” This message appears in two different situations: either you are properly connected to the router but the router has no connection to the Internet, or you have a WiFi connection but the TCP/IP settings are incorrect. You can find out which problem you have by hovering over the WiFi symbol in the systray. If you see “Unidentified network,” something went wrong with your IP address settings.
If you see the name of the router and “No Internet access,” the router is probably disconnected from the Internet and WiFi is not to blame. To verify that your WiFi connection is working, type ipconfig at a command prompt, look for the Wireless LAN adapter’s Default Gateway IP address, and type ping . If the router replies, type ping 8.8.8.8. If you don’t get any replies now, the router is either disconnected from the Internet or the connection is just very slow.