I will give $100 to the first person who can fix the false empty cartridge issue described here:http://h30434.www3.hp.com/t5/Other-printin...-not/m-p/176836
The fix must eliminate the false error message that a cartridge is empty and enable the printer to resume printing.
As you can see in the link, people have struggled with this problem for years and no consistent fix has been discovered. I am hoping that a smart person out there can find the cause of this problem and a solution for it.
I suspect that a file or registry entry must be set that indicates a false empty cartridge. This false entry is retained even when a new cartridge is installed, or the printer software is removed and reinstalled.
Even though many people have worked on this issue over the years, there still may be a creative solution out there. Let's hear it and if it works you get the money.