Dear "500GRand" (why all those odd names?!),
A short check at HP's Web site brought me to the < http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=3645094&lc=en&cc=us&dlc=en> page for downloading the drivers for your AIO machine.
Just select the correct Operating System, and you can go on from there (with the FULL driver - not the BASIC one).
Good luck!
Eric