1. Unplug everything to prevent any power from getting to the printer.
2.
Find the 3V button battery very near the front of the printer on the
left side near the bottom. It is awkward and the clip holding it in is
pretty stiff, but you can remove it by hand if your fingers are small.
(I also tried to just isolate the battery with a business card, but that
did not work for me.) I left the battery out over night. The battery is
still out.
3. Clean the printheads by swishing them around in
some water and then blotting them on a few layers of paper towel until
you got nice uniform stripes of ink on the paper towel. Then blot the
sides dry and reinstall the printheads.
4. Remove the cartridges and fill them as described at http://www.kingkahler.com/hp14colorinstructions.html
5. Set the date on the printer to the current date.
6. Turn off the black ink level gauge as described at http://www.misterinkjet.com/hp14blackreset.htm
7. Turn off the color ink level gauge as described at http://www.misterinkjet.com/hp14colorreset.htm
8. Get a great feeling that you did not allow hp to rip you off.
9.
Resolve never to buy an hp printer again until they resume making the
fantastic products that they did before Carly got a hold on them.