Hi, I am an Independent Advisor.
Let me help you with this issue.
I understand you are having problems with your Ethernet connection.
Have you tried running the network troubleshooter?
Please hover your mouse to the Network icon at the lower right-hand corner then right-click it and click Troubleshoot Network. Let the troubleshooter finish until it's done then this should either fix the problem or give us an error message.
If that doesn't work, we need to remove the Ethernet driver from the Device Manager and restart the computer to reinstall it.
Here are the steps to completely remove a Device from your computer.
Step 1. Use shortcut keys Windows key+ X
Step 2. Select Device Manager.
Step 3. Expand the entry for Network Adapters, Right-click the problematic device it is either Intel Ethernet or Realtek Ethernet adapter, and select Uninstall device.
Step 4. You need to check the option Delete the driver software for this device and then click the Uninstall button.
Step 5. Reboot the computer.
After the reboot, please see if the problem is fixed.
If that still does not work, please visit the support website of your laptop or desktop and then download and install the latest Ethernet driver then restart the PC.