I recently crimped my own Ethernet cable and ran it from my router to my room. When I plugged in the cable to my self built pc the port makes a solid amber light and a blinking yellow light, which I think means it is connected. But the computer doesn't even detect the Ethernet cable. I used the same cable on a laptop and it was able to connect so I don't think it's a problem with the cable or router. I can't check for drivers because my computer has no internet connection.