So as i stated above i believe that my lan port is dead. It's word about gigabyte 970a-d3 motherboard who have realtek ethernet controller 8111, as i read on internet before, this is common problem on gigabyte motherboards. I tried bunch of things like resseting cmos, reinstalling driver, trying to enable smartlan and all but i can't even enable smartlan. Flashes on the back aren't on when cable is plugged. My ethernet controller isn't recognized in device manager and i cant install driver again cause it doesnt recognize it. I am like 99% sure that it died, because last night there were lightning strike all over place, i shutted my pc as soon as i could, and everything was working perfectly until last night. Currently using usb tethering via android phone to acces internet through wlan on modem. I also tested cable and modem, everything is working properly, except this. So my question is, is there any way to fix this, or do i just give up and buy pci-e lan controller or whatsoever?