1. Check manufacturer’s website to see if a compatible driver is available.
2. Update or reinstall device driver for your network adapter.
3. Enable Network Adapter if it's disabled.
4. Uninstall/reinstall the network adapter.
5. Check if firewall is blocking network connection.
6. Switch Ethernet cables or reset the router/modem.
7. Troubleshoot the network adapter problems in Safe Mode.
8. Reset Network Settings in Windows.