Can't get the scanner to scan
HP units typically scan BEST when operated through the computer, rather than the unit itself. You MUST have the software installed on the machine, and not use plug and play, as that only gets "some stuff" going, specifically NOT scanning, I have found.
Go to HP.com and download the latest install directions, for your printer and OS. You may have to delete the old printer on your system, but, follow the directions exactly, from HP and plug the machine into your computer when directed to do so.
THEN run the scanner from the software installed on the computer, tons easier....
As a side note, next printer (all in one) should be a network printer, works TONS easier, with each computer allowed to scan, etc., like they hosted the unit. Can also be accessed wirelessly, all for the same money..... Cool.!