Hewlett Packard's HP 8500 All-in-One Wireless printer is useful around any home or small office. You can print, copy, scan and fax with the HP 8500. Just as with most technology, though, sometimes something goes wrong and you cannot get your printer to print or return to its normal function. When this happens, you can reset the printer to return the user settings to their factory defaults and reset the language and country or region settings. This often returns the printer to its normal function. The instructions to reset the HP 8500 wireless printer depend on your model.
Unplug the power cord from the back of your HP 8500 All-in-One wireless printer.
Count or use a timer to wait 20 seconds.
Press and hold "#" and "3" on the printer's number panel at the same time while you plug the power cord back into the back of your printer.
Stop pressing the "#" and "3" keys once the HP 8500 wireless printer starts.
Touch the "Setup" icon on the touch-screen display on your printer. This icon is represented by a picture of a wrench.
Use the arrows to scroll down to "Tools."
Touch "Tools" on the touch-screen display once you find the category.
Scroll down to and touch "Restore Factory Defaults."
Hit "Cancel" when you see the message: "Defaults Restored." Your defaults settings are restored and you are returned to the main menu.