Hi boomobile,
The Semi Full Reset is generally considered a last step when no other troubleshooting steps have worked.
If successful, the Semi Full Reset would reset the printer to factory defaults and clear the memory. If the printer was on a wireless network, it would be taken off and would need to be reconnected. If you want to give this a try, I can send the steps in a private message to your HP Forums in-box. I would need you to agree not to publish the steps. Let me know what you decide.