Hi,
Previous to finding this solution I had tried loading the HP Photosmart C4700 All-in-One Printer series Full Feature Software and Driver in a wireless lan environment multiple times trying different approaches I had read about online and failed repeatedly. I used the described solution at the top of this page (date & time mark: pretty much to the letter on an ASUS Essentio Series desktop running Windows 8.1 64 bit OS. It worked. My impression was that the thorough preparatory cleaning up of the system described was key to the success of this process.