If Windows is no longer detecting the network hardware, focus on the network adapter in Device Manager first.
- Open Search, type Device Manager, and open it.
- Expand Network adapters.
- If the adapter is listed but disabled, right-click it and select Enable device.
- If the adapter is listed, right-click it and select Uninstall device.
- Select Attempt to remove the driver for this device if that option appears, then select Uninstall.
- Restart the PC.
After restart, Windows should automatically look for and install the network adapter driver again.
If the adapter still is not detected:
- In Device Manager, check whether no network adapter appears at all.
- If it does not appear, Windows is not detecting it. In that case, manually install the latest network driver from the PC manufacturer’s website. If the PC cannot get online, download the driver on another PC and copy it by USB. The PC manufacturer and model number are needed.
- Also verify the latest driver by running Windows Update and compare the Driver Version and Driver Date in Device Manager > adapter Properties > Driver tab with the version on the manufacturer’s site.
If the adapter is detected again but internet still does not work, reset the network stack:
- Open Search, type Command Prompt, then select Run as administrator.
- Run these commands in order:
-
netsh winsock reset
-
netsh int ip reset
-
ipconfig /release
-
ipconfig /renew
-
ipconfig /flushdns
- Check whether the connection returns.
If that still fails, use Network reset as a last step. This removes and reinstalls network adapters and resets their settings to default. It can also require reinstalling VPN software or virtual switches afterward.
- Select Start and open Settings.
- Go to Network & internet.
- Select Status > Network reset.
- Select Reset now > Yes.
- Wait for the PC to restart, then test the connection again.
A quick isolation step is to try the same Ethernet connection or network on another Windows PC if available. If another PC also cannot connect, the issue is more likely with the router, ISP, or adapter rather than the original PC.
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