Ensure that the internet indicatorlights solid on.
If the problem persists, try the following methods:
Ensure that your computer is connected to port WAN/LAN or LAN properly.
Ensure that your computer is set to obtain an IP address automatically and obtain DNS server address automatically.
Ensure that your wireless device connects to the Wi-Fi network of the router with the Wi-Fi name you set.
Log in to the web UI and change your Wi-Fi name and Wi-Fi password on Wi-Fi Settings > Wi-Fi Name & Password page. Then try again.