I'm having a frustrating problem where Windows 11 isn't detecting my Ethernet port at all. It doesn't show up in the Network Adapter settings or the Device Manager. This started happening right after I force restarted my computer, so I suspect it might be a software issue, but I'm not sure if I messed something up. I've already tried restarting and resetting the network settings, plus unplugging and re-plugging the Ethernet cable to see if that helps. For context, I'm using the Ethernet port on my ASRock A520M-HDV motherboard. Any ideas on what might be causing this or how I can fix it? Feel free to ask me for any additional details!
2 Answers
It sounds like this might be a hardware issue, especially if Device Manager isn’t giving you any clues, like an 'Unknown Device' warning. If you don’t see an exclamation point next to any devices, then it's possible the Ethernet port could be malfunctioning. If your motherboard has a dedicated Ethernet card, try reseating it. If it's built-in, using a USB to Ethernet adapter could be a quick workaround. If your ISP speed exceeds 1 Gbps, look for USB to 2.5 or even 5/10 Gbps adapters to get the best performance.
First thing you should try is downloading the latest drivers from the ASRock website. Installing the right drivers can often resolve these types of issues. Also, check your BIOS settings—make sure the Ethernet device isn't disabled. If everything looks good there, it could also help to see if your BIOS is up to date. If all else fails, consider resetting the BIOS to see if that brings back the Ethernet detection.

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