You'll want to read this - http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01867124&cc=us&dlc=en&lc=en
To answer your previous question - Since it came installed with Windows 8, the drivers on HP's website are for Windows 8 + (8.1), and not anything before. You could install Windows 7 and try your best to get the drivers working for 7, and you may even have to go 3rd party, but I would not recommend it. It's best you stay on Windows 8 as that's the OS your drivers were developed and tested for.
Regards,
Patrick