Here’s a list of things to do when troubleshooting this issue:

1. Check if the Wi-Fi switch is enabled on the device.
2. Check if a wireless connection is enabled on the device and active on the network.
3. Ensure that the device is powered on.
4. Ensure that the router is powered on and functioning properly.
5. Check the signal strength by checking the Wi-Fi indicator on the device.
6. Perform a wireless network reset on the device.
7. Check any firewall settings or parental control settings that may be blocking connections.
8. Update the device’s network driver to the latest version.