Replace it with a new one to check on it.
Here also windows 10 ethernet not working but wifi is.
In case you are switching from Wi-Fi to Ethernet then the MAC address should alter automatically. Ethernet cable and Wi-Fi connection also requires this. Let’s get into little detail, an internet connection via a Network adapter requires a MAC address to establish a good connection. Windows 10, 8, 7) wifi is working but ethernet is not.
Almost all the windows version users (i.e. As, why does wifi work but not ethernet? Has topped the search list. “Ethernet not working but wifi is” the latest fall for various netizens. Any issue with network connectivity is not less than a catastrophe for users. The Internet has become a basic need of people in this lockdown like situation.