Roku seems like it's working with audio, program icons, timer circles, video frames, etc. But when I try to stream something the video is black. Also if I highlight a video in the YouTube app when it previews the video the preview box goes black. It's not just in YouTube. In PlutoTV, CBS News, Fox News, and almost every other stream the video is black. It's a new Roku Streaming Stick 4K. I've tried, rebooting, factory reset, and unplugging everything overnight. Wi-Fi and internet work fine. Please help, thank you.