Network drivers don’t just enable a port; they hook into Windows’ . Windows 7 primarily uses NDIS 6.20. But a late-model network chip might need NDIS 6.30 features.
If you try the five solutions above and none work, your network adapter hardware is likely for Windows 7. In that case, your "best offline installer" is a $15 USB-to-Ethernet adapter that has native Windows 7 drivers built into its firmware (e.g., based on the older AX88179 chipset). network adapter driver windows 7 offline installer best