Thank you for contacting Intel.
When you upgrade to Windows* 10, have you tried the inbox (default) driver available in Windows 10?
Yes, that's what is weird. The nic worked right after the upgrade from Windows 7 then stopped working a few days later. I have tried uninstalling the driver from Intel and rebooting and letting Windows 10 install it's driver, but it still does not work.
I see. We have released 2 driver versions for Windows* 10 recently. They are versions 20.1 and 20.2. Have you tried both versions?
In case these versions didn't work, we suggest to contact your motherboard manufacturer for assistance.