Chromecast Connection problem is very common now days. follow beolw steps it will help you to setup Chromecast Comsetup.
1. Chromecast Spontaneously Restarts :- If your Chromecast’s video output is blacking out sporadically the Chromecast restarts altogether, or the Chromecast is stuck in a loop of rebooting constantly, this is the section for you.
2. Check the Power Supply
3. Factory Reset
4. Video Stutters or Drops Out
5. Poor Wi-Fi Signal
6. Extend the Chromecast for Less Interference
7. Boost Your Wi-Fi Signal
8. Change Your Wi-Fi Channel
If still you are face any issue then take Chromecast Help from www Chromecast Setup. For any further query visit at Google Chromecast Setup.