A. 1. Check the Ethernet cable for any visible damage. If damaged, replace it with a new one. 2. Ensure that the cable is securely connected to both the router and the device. 3. Restart the device you are trying to connect to the internet and the router.

B. 1. Access your device's network settings and ensure that the Ethernet connection is enabled. 2. If the connection is still not working, try connecting a different device to the same Ethernet port to determine if the issue is with the port or the original device.