Leave it unplugged for two minutes before you plug it back in. If other devices are able to connect to the Wi-Fi network, and Chromecast is not working, directly continue to Step 2.Once all the router lights are back on and the network name is listed in the Wi-Fi options on your phone or computer, check if the Chromecast is now connected to the Wi-Fi network.To reboot, unplug the Wi-Fi router. Leave it unplugged for two minutes before you plug it back in.It is recommended that you contact your Internet Service Provider (ISP) to check if any of your network settings were recently changed. If you successfully rebooted the router and the Wi-Fi network is still not available for all the devices, then there could be something wrong with the Internet service.If the network is online but the issue is not resolved, then continue to Step 2 for more troubleshooting.If the network is online and the issue gets fixed after you reboot the router, skip the rest of the steps.After the reboot, look at the following scenarios:.Once all the router lights are back on and the network name is listed in the Wi-Fi options on your phone or computer, check if the Chromecast is now connected to the Wi-Fi network.Some routers have backup battery packs. You may need to disconnect the battery packs as well, in order to ensure that the router is completely turned off. Ensure that the router's lights turn off completely when unplugged.To reboot, unplug the Wi-Fi router. Leave it unplugged for two minutes before plugging it back in.If no other devices are able to connect to the Wi-Fi network or access the Internet, reboot your router.If other devices are able to connect to the Wi-Fi network, and Chromecast is not working, continue to Step 2 directly.Is your Wi-Fi network available and are other devices (phone, tablet, desktop or laptop) able to connect to it and access the Internet?.