Windows 10 PC suddenly says Ethernet cable is not connected.

Starting yesterday, my PC is suddenly disconnected from Internet. The troubleshooter claims there is no cable plugged in and the light by the Ethernet port is no longer on. I have tried three different cables, another PC in the same room connects fine with all three of them. It was left on and connected to the Internet the night before. I don’t think Windows updated that night or anything. I had moved the PC over a few feet that morning, but nothing happened that could have damaged the port or cable that I remember. The only suspicious thing was that in the morning before I used the PC I noticed that both it and the other PC in the room showed no connection to the Internet despite being plugged in. When I came back a bit later the other one was connected but mine still was not.

I’ve tried: restarting the computer, using different Ethernet cables, restarting the router, visually checking the port for damage, blowing into the port for dust, running Windows troubleshooter, enabling adapters in Device Manager, Network Connections, and BIOS, turning off firewall and antivirus and restarting, “flushing DNS and resetting TCP/IP” in command prompt, changing DNS in Device Manager, uninstalling adapter in Device Manager and restarting… I think that’s everything.

I believe I’ve tried every suggestion on [this](https://techcult.com/fix-ethernet-not-working-in-windows-10-solved/) page, and the rest of the results on Google and Reddit seem to echo the same set of advice.

EDIT: I’ve now got a USB Ethernet adapter in it and it’s working fine. Hopefully this will keep it at bay until I upgrade next.