Use a second PC to grab the driver via Hardware ID → USB drive → offline installation. It’s clean, permanent, and takes under 10 minutes.
By following these steps, you can restore your Ethernet connection on Windows 11 quickly. If you are still having trouble, please tell me: Is this a pre-built PC (like Dell/HP) or custom-built? What is the exact error message in Device Manager? How To Install Ethernet Drivers For Windows 11 & 10
If your Windows 11 PC has no internet, use another computer or your phone to download the driver.
Open Device Manager , right-click your Ethernet adapter, and choose Properties . Go to the Power Management tab and uncheck "Allow the computer to turn off this device to save power."