1. Check your cable connections and particularly power cycle the modem and router.
2. Test the internet connection using another device.
3. Ensure that your device is connected to the same network and is in range.
4. Try disabling firewall settings temporarily to see if the internet connection can be established.
5. Strive to reset the modem and router within the administrative panel.
6. Verify that the modem firmware is up to date.
7. Contact the service provider for further assistance.