It will be as if you bought a new Roku device. Keep in mind this will clear absolutely all the data from your device. If nothing worked, try performing a factory reset as a last resort. Hit the Check now button to see if there’s a new system update version pending and install it.Installing the latest system updates may help you to fix this problem. Or remove the HDMI cable, swap the ends, and reconnect them to your device.Īlso, try a different HDMI input and check if you notice any improvements. Not being able to watch full-screen channels on Roku may be because the signal that your TV is getting is not strong enough.Ĭheck your TV settings and try to optimize them. Enabling the auto-detect feature should be enough to solve this problem for most users. In most cases, Roku should be able to detect the capabilities of your TV. The device is unable to detect your TV configuration and throws an error message that you can choose to ignore and force the connection.Roku detects your TV display type is supported.Choose Auto-detect and let Roku analyze your HDMI connection.Take your Roku remote and press the Home button.This allows Roku to automatically detect the correct resolution and frame rate settings that your TV supports. If you’re using customized settings, go back to auto-detect mode. One frequent cause of this issue is that you did not set up the correct resolution and frame rate settings on your device. How to Fix Roku Full-Screen Issues Check your display settings

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