How to Fix the Ethernet Cable Unplugged Error Even When It’s Plugged In

If your PC shows the "Ethernet cable unplugged" error even though the cable is connected, it means your computer isn’t detecting a proper connection. This usually happens because of a loose or damaged cable, a faulty port, incorrect network adapter settings, or outdated drivers. Checking your physical connections, testing with different cables and ports, updating drivers, and resetting network settings can often fix this issue quickly.

Why does my PC say Ethernet cable unplugged when it’s actually plugged in?

The "Ethernet cable unplugged" message means your computer doesn’t detect an active signal on the Ethernet port. This can happen if the cable isn’t making a solid connection, the port is damaged, or the cable itself is faulty. On the software side, the network adapter might be disabled, set incorrectly, or have outdated or corrupted drivers. Power management settings or incorrect speed and duplex settings can also cause the adapter to report no connection even when the cable is plugged in. Essentially, either the electrical signal isn’t reaching the PC or the driver isn’t reporting the connection status correctly.

Could my Ethernet cable or port be faulty even if plugged in?

Yes, the cable or port can be faulty even if physically connected. Check the cable for visible damage like cuts, bends, or frayed ends. Make sure both ends click firmly into place. Try using a different Ethernet cable that you know works. If the error continues, plug your cable into another port on your router or switch to see if the original port is the problem. Testing the cable and port with another device helps confirm if the hardware is defective. If the cable or port fails across multiple devices, replacement or repair is likely needed.

Can network adapter drivers cause the unplugged error?

Outdated or corrupted network adapter drivers can cause your PC to incorrectly report the Ethernet cable status. Drivers control how your hardware communicates with Windows, so if they’re faulty, the connection might not register properly. To update drivers on Windows, open Device Manager, find your network adapter under "Network adapters," right-click it, and select "Update driver."

Choose to search automatically for updated software. If Windows doesn’t find a newer driver, visit the manufacturer’s website to download the latest version manually. After updating, restart your PC and check if the error disappears. If updating doesn’t help, uninstall the driver in Device Manager and restart your PC to let Windows reinstall it automatically.

How do I check and adjust my network adapter settings?

Incorrect network adapter settings can cause connectivity problems. To check and adjust them:

1. Press Windows + R, type ncpa.cpl, and press Enter to open Network Connections.
2. Right-click your Ethernet adapter and select "Properties."
3. Click "Configure," then go to the "Advanced" tab.

Look for "Speed & Duplex" and if it’s set to "Auto Negotiation," try selecting a fixed speed supported by your network, such as "100 Mbps Full Duplex" or "1.0 Gbps Full Duplex."

Next, go to the "Power Management" tab and uncheck "Allow the computer to turn off this device to save power" to prevent the adapter from disabling itself.

You can also reset the adapter by right-clicking it in Network Connections, selecting "Disable," waiting a few seconds, then right-clicking it again and selecting "Enable."

These steps can fix the unplugged error if it’s caused by misconfigured adapter settings.

What network resets or system changes can fix this error?

If hardware and driver checks don’t fix the problem, resetting your network stack and Windows settings can help.

1. Open Command Prompt as an administrator.
2. Run these commands one at a time:

netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns

3. Restart your PC after running the commands.

These commands reset network protocols and refresh IP settings, which can clear corrupted network states.

Also, try running the Windows Network Troubleshooter by right-clicking the network icon in the taskbar and selecting "Troubleshoot problems." Follow its prompts to detect and fix issues automatically.

If the problem continues, restart your router and modem to clear potential issues on those devices.

How can I confirm the problem is fully resolved?

To confirm the issue is fixed, check the network icon on your PC. It should no longer show a warning or the unplugged message. Open Command Prompt and run ipconfig to see if your Ethernet adapter has a valid IP address.

Test your connection by loading websites or running a ping test, for example:

ping google.com

If the error is gone and your connection stays stable, the problem is resolved. If the unplugged message returns, repeat testing with different cables and ports to rule out intermittent hardware faults.

Conclusion

If you still see the Ethernet unplugged error after these steps, the problem is likely hardware-related, such as a bad cable, network card, or router port. Most issues can be fixed by checking physical connections, updating drivers, adjusting adapter settings, and resetting network configurations. Test with known-good cables and ports to isolate the cause before replacing hardware.