It's kind of a pain in the butt BUT your printer reads all those little gold dots on the back of your cartridge. If you still have your HP cartridge that was working in your printer then carefully remove it, use a tiny bit of glue stick(not super glue because you're gonna want to use it again so you'll need to peel it off), and place it over the gold dots on the back of your generic cartridge. Carefully install in your printer and PROBLEM SOLVED.