No Internet (Patreon)

For some kind of reason my cabled Internet just stopped working out of the blue. WiFi has no problems though.

While trying the troubleshooting the error I get, which can't get fixed, is " Ethernet doesn't have a valid IP configuration".

Anyone has any idea on how to fix?
I tried:
- restarting both router and pc;
- reinstalling network adapter and updating drivers;
- messing with power settings as suggested on a guide;

A thing I noticed is that I can't reach the router from my pc using the local address, so it must be a hardware problem at this point?