Thanks for helping out, MJH!
@Jkcann, do you still need help with this? If yes, could you tell us what's the LED light status in your Chromecast and the distance between your router and the Chromecast device?
Give these steps a try:
For more troubleshooting steps, please visit this support website article and let us know how it goes.
Just wanted to see if you still need help. Please let me know if you have any other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again.
Should that happen, feel free to create a new one if you have more questions or have other concerns in the future.