@Shela
It sounds like you're powering up the Roku and then attempting to connect the HDMI cable. That's a bad idea. You can damage the port on the TV, the port on the Roku, or the cable itself. And if you damage it, you can't use it.
Perhaps if you were to restate the issue, explaining what's happening. Keep in mind we're on the other end of the Internet and can't see what you see.
DBDukes
Roku Community Streaming Expert
Note: I am not a Roku employee.
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