How to fix Ethernet randomly disconnecting

Question

Hi- I am currently facing an issue with my Ethernet, which has just decided to stop working.

I built my PC back in February of this year (2025) and it has been running great up until today. It gets pretty frequent use, and yesterday it was completely fine, no connection issues.

Suddenly, today, my Ethernet (which is still plugged into the PC at this point) disconnects and does not reconnect on its own.

So far I have tried what feels like every suggestion on this site, from resetting my network settings and running network diagnostics, to uninstalling and reinstalling drivers as well as turning off eco energy to my network adapters.

It’s not the cord, i tried another cord and it was presenting the same exact issue. The ports on my modem were changed, still resulting in the same problem. My MOBO only has one Ethernet input. All other devices (including another PC) work completely fine and have no connection issues whatsoever.

I was able to get it working for a couple of hours, but after i restarted my PC a couple of times, it went back to having the same issue. When it did it this time, I was trying to install recent windows updates.

I’m at my wits end. If anyone can help, I can provide more info about my pc.

Thank you for your time

Answer 1

It sounds like you're experiencing a frustrating issue with your Ethernet connection. Here are some potential solutions based on common causes of Ethernet disconnections:

1. Check Power Management Settings: Ensure that your network adapter's power management settings are not set to turn off the device to save power. You can do this by:
   • Going to Device Manager.
   • Expanding the "Network adapters" section.
   • Right-clicking your Ethernet adapter and selecting "Properties."
   • Navigating to the "Power Management" tab and unchecking "Allow the computer to turn off this device to save power."
2. Update Network Drivers: Since you've already uninstalled and reinstalled drivers, make sure you have the latest drivers from the manufacturer's website. Sometimes, the default drivers provided by Windows may not be the most up-to-date.
3. Check for Windows Updates: Ensure that your Windows operating system is fully updated, as updates can include important fixes for network issues.
4. Ethernet Measures: Consider checking the Ethernet measures, which are diagnostic metrics that can help identify issues such as packet loss or driver failures. These metrics can provide insights into the performance and reliability of your wired connection.
5. Registry Changes: If the issue persists, you might want to explore changing certain registry settings related to network services. For example, adjusting the start timing of the DMWapPushSvc service might help stabilize your connection. However, be cautious when editing the registry, as incorrect changes can cause system issues.
6. Check for Conflicting Software: Sometimes, third-party network management software can interfere with your connection. If you have any such software installed, consider temporarily disabling or uninstalling it to see if it resolves the issue.

If these suggestions do not resolve the problem, it may be worth checking the motherboard's Ethernet port for any hardware issues or considering a PCIe Ethernet card as an alternative solution.

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References:

• Network gets disconnected for several seconds if the computer isn't used after you sign in to Windows 10
• Ethernet measures