Restart Network Equipment:

Power off your modem and router for 30 seconds. Restart the modem first, wait for connection, then restart the router. This solves most issues.

Run Network Troubleshooter:

Settings > Network & Internet > Network troubleshooter. Let Windows diagnose and attempt automatic repairs.

Release and Renew IP:

Open Command Prompt as Administrator. Run "ipconfig /release" then "ipconfig /renew". This obtains a fresh IP address from your router.

Flush DNS Cache:

In the same Command Prompt, run "ipconfig /flushdns". Corrupted DNS cache causes connectivity issues despite valid connections.

Try Different DNS Servers:

Change DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare). Network settings > IP assignment > Edit > Manual DNS.

Forget and Reconnect:

In WiFi settings, click on the network > Forget. Reconnect and enter password again. Refreshes the connection completely.

Conclusion:

Most "connected but no internet" issues are router-related. Restarting equipment solves the majority of cases.