Problem with Ethernet on Z790I board
Problem with Ethernet on Z790I board
I believe you're using Windows 11, as indicated by the 14gen in your taskbar. Right-click the network/sound icon and select "Network and Internet settings" at the top. You should see "Ethernet" listed there, followed by "Properties." Click it and set the privacy to private. Further down, you'll find the IP address—likely an IPv4 number, so you only need the first digit.
Secured the account using PowerShell commands. No IPv4 found, but an IPv6 address was retrieved. Link-local IPv6 address: fe80 IPv6 DNS: fec0. Discovered this during a release and renewal process. The Ethernet connection failed to reach the DHCP server or generate an IP address. Restarted via services.msc but received access denied error. Suspect Windows 11 is behaving unexpectedly. Operating system version: 22H2 (Build 22621.2506). Running on Windows 11 Pro.
It's connected via a cable, with blinking and steady lights. Orange flashes occasionally while green stays on. I'm worried about whether my router has enough IP addresses in its DHCP range. How can I verify that? Also, please note that my ISP modem is linked to a switch, which connects to all my Ethernet ports in the apartment. My PC plugs directly into the wall. So the modem → switch → PC setup. I don't interact with the router using my Ethernet cable.
Connect to your router by logging in from a connected device. In a CMD window, run ipconfig /all. The gateway address will appear—use it in a web browser. The admin credentials should match what’s displayed on the router unless you’ve updated them.
I believe I identified the problem! Everything connected properly! The fix was using context. To confirm, I rechecked my MacBook Ethernet connection—it appeared as a self-assigned IP with 169. I tried it on another port, same result. Therefore, I relocated my router. Now instead of Modem → outlet → device, it’s Modem → router → outlet → device. Exactly as expected, my Ethernet showed up instantly. My conclusion is that my ISP likely didn’t have a proper configuration and probably lacked a DCHP server, resulting in no IP assignment. Moving the router between devices resolved the issue, and both the MacBook and PC are now working. Thanks for your assistance! You’ve given me the right guidance! Speed is back!
Hi... I think the outlet acts like a switch. Yes, the modem-router switch device functions properly. Your ISP typically assigns one IP address per port—just plug anything in, but the second device won’t get an IP unless it’s connected to a DHCP server. If you connect without a DHCP server between the modem and the unit, it’s completely normal. You’ll only receive a 169.0 range when using that setup. Overall, your network is configured correctly now, and your new system has an active IP address and is online.