Plug your Chromecast into your TV. ... Connect your computer to your Wi-Fi network. ... Visit the Chromecast setup site. ... Download the Chromecast app. ... Start Chromecast on your computer. ... Check your code.
If other devices (e.g. phones, tablets) can't cast successfully, then it's likely an issue with your router or network. Try rebooting your Wi-Fi router by unplugging and plugging the power source. Make sure that your Chromecast device and other devices are connected to the same network