How do you resolve the Intel(R) I225 (3) network adapter internet connection issue?


I am using an MSI MPG Z690 Carbon WIFI Motherboard, I5 12600K CPU with Windows 10 Home. I downloaded all LAN drivers from MSI's official website and installed them via usb. However, when I plug my ethernet cable in, there is no connectivity. The adapter is showing and active in device manager. The WIFI is working. How do i resolve the ethernet connection issue? Any help would be greatly appreciated. Thanks.

Best Answer


  • Scary_Guy

    If it is working and you can see the SSID of nearby devices then it's likely a configuration issue/conflict with the IP settings. Generally Windows is configured for DHCP out of the box, but you may have to set it manually if your router's DHCP capability is switched off for some reason.

    If it's possible you could also just run an ethernet cable directly to the router/switch if that doesn't work. Best of luck.

  • PC_build1
    Name Dropper First Comment
    edited February 2022
  • PC_build1

    The WIFI works just fine. The ethernet cable coming directly from the router is not being seen. The cable works with a different PC so I do not know what the issue could be.

  • Scary_Guy

    Okay, I got confused and thought you were trying to use the WiFi. But that works and you want to use ethernet?

    First off, disconnect the WiFi, possibly disabling that in the device manager. You can turn it back on later but to test that the ethernet is properly working you want it disconnected so it doesn't get in the way.

    Next, as long as you're in Device Manager, make sure the drivers for the network card (not the WiFi one obviously) are installed properly, that's a separate device than the one that controls the RJ45 port.

    Next check that the cable is plugged into the ports at both ends and that the connection and activity lights are both lit in the back (if both exist, sometimes it's just one.) I like to recheck just to be sure for my own sanity (especially since some of the tabs broke off on mine and I'm too cheap to get new cables.)

    Then go into your network settings like I said before.

    If there's a firewall that's set to block traffic that could also be an issue, though I'm not sure why it would affect just the RJ45 port's traffic and not the WiFi, but it's good to cover all the bases.

    If you really want to get into the weeds I found a guide here

    That website is run by the guys who do the certification testing for N+ (among others.) So they know what they're talking about.

    If you STILL have trouble after all that, I'd call a friend's gamer kid over, they should be able to figure it out. Best part is you can pay them in snacks or something. 😄

  • PowerSpec_MikeW
    PowerSpec_MikeW PowerSpec Engineer
    5 Insightfuls First Anniversary First Comment 5 Awesomes


    Do you by chance have an AT&T Gateway?

  • PC_build1

    @TSMikeW Yes, I have an AT&T gateway. I am on my third board with same result.

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