Hello sis4615,
Welcome to the HP Forums! I understand your concerns. Please plug this printer into a direct wall. The reason why I am recommending this step is to test out the power. This could resolve your issue as well.
Please follow this HP document on A 'Scanner Failure' Message Displays on the Printer Control Panel.
If these steps don't resolve your issue, then please contact HP technical support for further assistance. Click here to find out: HP Worldwide Contact.
Good luck.