Hi @wilko10s,
Welcome to the Roku Community!
Thanks for letting us know about the behavior you're seeing with your Roku device that is showing a purple screen and all of the troubleshooting you've done.
Please be advised that purple screen or HDCP errors happen when there is a problem with the physical connection or communication between your Roku and TV. Often, it's a simple matter of reconnecting the HDMI cable, switching to a different HDMI cable, for Roku Streaming sticks, and connecting to an HDMI extender.
If the issue persists, please refer to the support article here for additional troubleshooting steps: What to do if you see an “HDCP Error Detected” message or a purple screen | Official Roku Support
Please keep us posted and we'll continue assisting you from there.
Best regards,
Mary
Mary F.
Roku Community Moderator