Addressing the error message “Network connection failed. Please check your internet connection.” can be straightforward if you follow these steps:

1. Check Hardware: Ensure that your modem and router are powered on and connected properly.
2. Inspect Cables: Look for any loose or damaged cables connecting your devices to the router.
3. Restart Devices: Power cycle your modem and router by unplugging them, waiting 30 seconds, and plugging them back in.
4. Check Wi-Fi Connection: Make sure your device is connected to the correct Wi-Fi network and that the password is entered correctly.
5. Run Network Troubleshooter: Use built-in troubleshooting tools available on your device to diagnose the problem.
6. Update Drivers: Check for updates for your network adapter drivers and install them if necessary.
7. Reset Network Settings: If issues persist, consider resetting your network settings to default and reconfiguring your connection.

Following these steps can help you effectively diagnose and resolve the network connection failure, allowing you to get back online quickly.