Hello! My name is Mostafa, and I will try my best to assist you with this so that you find a satisfactory solution.
I’m sorry that you are experiencing this issue. Please check the device manager to see if the system recognizes the adapter.
Right-click on the Start button and select "Device Manager" from the menu. Look for any devices with a yellow exclamation mark or red X next to them, as this could indicate a driver issue.
Check if any updates are available for Windows and update the Ethernet adaptor.
Test the adapter on a different computer to see if it works properly. If it doesn't, then the adapter itself may be defective. You can test it with another device, such as a Mobile, Tablet or smart TV if you cannot access another computer.
I hope the above steps helped you. In case of additional questions, reach out back to me, and I will be happy to help and try my best to resolve your issue. Thank you.
Best,
Mostafa