: Press Windows Key + R , type cmd , and hit enter. Type wmic bios get serialnumber to get your exact system asset tag instantly. Step 2: Download Drivers from Official Channels

Lenovo System Update: Update Drivers, BIOS, and Applications

Without the correct LAN driver, your Ethernet port will not work at all (red X or “Network cable unplugged”).

Because the 3716 is an older board, the official Lenovo support site might not explicitly list it under a single "3716" search.

Because "3716" is a part identifier, you must find your machine's or Machine Type Model (MTM) to access the correct driver library: