Locate setup.exe within the extracted folder. Right-click it and choose "Run as Administrator" to ensure the utility has the necessary permissions to modify network adapter settings.
If your Ethernet card is completely unresponsive, you may need to download the drivers on a different computer and transfer them via a USB flash drive. Ensure you also have the latest Realtek PCIe GBE Family Controller Driver installed, as the diagnostic utility works best when paired with the most recent driver version. Locate setup
The download usually arrives as a .zip folder. Right-click and select "Extract All". Locate setup