I have net gear cm1100, asus rt ac86u router, hsi with Comcast @800mbps. When I run Speedtest with iPad or cell phone, I get near the 800 download, but when I try my Ethernet wired pc, I have no internet. This started about a month ago with my pc speeds dropping to less than 300mbps. Now I have nothing. Tried all the usual troubleshooting with modem, but nothing.
Is M/B Ethernet adapter kaput?