Hi @XIYZ,
Welcome to the HP Support Community.
I'd be happy to help you!
I understand that you are having issues with the MESSAGE SUPPLY SYSTEM ERROR.
If you have performed all the steps from this document and still having issues, this could be a hardware issue.
Hope this helps! Keep me posted for further assistance.
Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.