Whether the Ethernet port is working or not, LAN Port vs. WAN Port: When you first look at the latest network router these days where the switching function is built into the device. You will find several ports from three to five of them on the body of the router box. Yet, plugging a cable from an ISP to any of the ports… It's lit, IPv4 and IPv6 say "no network access", in the connection details IPv4 has IP addresses, there are 2 Ethernets in Network connection Ethernet 1 and Ethernet 2, Ethernet 1 shows connection to my router without any problem (Realtek PCIe FE Family Configuration). Ethernet 2 says network cable unplugged and its TAP-Windows adaptor V9 Delete the old router profile as follows: - On the tool bar, on your desktop, click on the Internet indicator icon on the bottom right. - Click on "Open Network and Sharing Center". - On the left column select "Change Adapter Settings". - Right click on the old router profile, and select delete. Invalid network cache The unfavorable power output of the network adapter How to Fix Ethernet Port Not Working There are a ton of methods to fix your ethernet connection and its port in the motherboard. The definitive fix for your issue could differ from other users. Re:Deco M4 ethernet to computer not working. @TonyDo go into iptv/lan, then note down the vlan id for internet. Go to mode, choose custom, and just put in the vlan id, but dont turn on iptv. 6. #11. Options. You don't mention if it's impacting just one PC or multiple devices. If you're just back from vacation and trying to re-connect a laptop, check to make sure the ethernet adapter or DHCP wasn't disabled by a 3rd-party WiFi hotel connectivity set-up. 2. Zeroarkk. Came in via the coaxial cable. Took the modem, router, switch port the router hooked to, switch port my printer plugged into (same 48 port switch) as well as the nic in my printer. Was not a good day. But yeah, get a new modem and hope Ethernet down stream is still good. portnux. EWowk.