Why does my Ethernet connection randomly disconnect?

September 13, 2026 2 answers
Asked by MellowPine42
My wired Ethernet connection randomly stops working and reports a bad connection. Restarting the network adapter sometimes helps, but I've already tried the basic troubleshooting steps and can't get it to stay reliable. I'm using the Ethernet jack built into the wall. What could be causing the dropouts, and how can I fix them?

Answers

CedarFox88
This could be caused by power-saving settings or a network adapter driver. Open Device Manager, find your Ethernet adapter under Network Adapters, open Properties, and disable โ€œAllow the computer to turn off this deviceโ€ under Power Management. Also check the Advanced tab for Energy Efficient Ethernet, power-saving, or ultra-low-power options and disable them if available. Updating or reinstalling the adapter driver is worth trying too.

QuietOrbit6: The wall jack itself may also be part of the problem, especially if itโ€™s connected to loose or damaged wiring. Try a different Ethernet cable and another wall jack or router port if possible.

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AmberKite31
Test the physical connection before assuming itโ€™s a Windows issue. Replace the Ethernet cable, try another port on the router or switch, and see whether another device loses connection through the same wall jack. If the problem continues, check Event Viewer for network adapter errors and inspect the adapterโ€™s link status when the connection drops.
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