Hey there Eduromero1983,
I'm sorry to hear you haven't been able to cast! Sometimes, troubleshooting these issues can be overwhelming, so I'd be happy to help you out. Let me just ask you a few questions to better understand what's happening:
Go ahead and follow the steps in this article if you are trying to cast from Google Chrome to your TV, and let me know if you run into any issues.
I look forward to your response, and if you have any more questions or concerns, please let me know.