Cause: Missing Intel Chipset driver. Solution: Download the Intel Chipset INF Utility version 9.4.0.1027. Run it, even if Windows says it’s already installed (force reinstall).
This is the most common point of failure. Two versions exist: foxconn 17a0 motherboard driver
How to check: Go to Device Manager > Network adapters. If it says "Realtek PCIe GBE", download Realtek driver. If it says "Intel 82567LM", download Intel PROSet driver. Cause: Missing Intel Chipset driver