My ethernet stopped working a few months ago. I decided to try an usb to ethernet adapter. Didnt work. So my last thought was a PCI E ethernet card. That didnt work either. I tried different ethernet cables but that didnt seem to help. It doesnt make sense that the other things i tried didnt work. Is my mobo just fried on the ethernet side?
I'll have to check for the flight mode tomorrow but I'm pretty sure it's off. The link did not fix for me. The adapter Is showing but when I run a diagnostic it says no ethernet is plugged in. The upload image would be the same as what you posted. I have no other devices through ethernet. I got a new router when the ethernet stopped working and still the same on the new one.
All adapters show a red x on them and all give the message to make sure an ethernet cable is plugged in. Tried 2 cables and bought a new one neither worked.