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?")
3) Go to Settings > WiFi > Basic, make sure the SSID broadcast is turned on.
4) Go to Settings > WiFi > Advanced, to make sure the Channel of 5GHZ isn’t Auto.
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.