thanks for reaching out and I'm sorry to hear that you're having an issue with your Chromecast with Google TV. Let's sort this out.
A few questions: what's the LED status on your Chromecast? How far is it from the Wi-Fi router? Is this an initial set up or working previously?
Try these steps:
Keep me posted.
Chiming in to see if you still need assistance with this. Hope the previous post helped. Let us know if you have additional questions, otherwise we’ll be locking the thread.
Due to inactivity, I'll go ahead and lock this thread in 24 hours. Feel free to start a new thread if you need assistance with your Chromecast and we'd be glad to assist you further.