Follow the steps below to check the router settings.
1) Check the WIFI indicator is on.
2) Log in to the Home page (Refer to "How can I access the Home page?" in the Basic Settings module)
3) Go to Settings > WiFi > Basic, make sure the SSID broadcast is turned on.
4) Go to Settings > WiFi > Advanced, to change the Channel and try again..
Follow the steps below to check the terminal settings.
1) Refresh the network list on your computer.
2) Right-click Wireless Network Connection.
3) Click Open network and sharing center.
4) Select Wireless Management.
5) Click the wireless network which is not being used, and delete/forget it fromthe network list.
6) Click OK and restart your computer.

Note: Available settings and menus may vary depending on device model and software version.