Unfortunately, you have to get new ink. A lot of the time the computer chip in the ink goes bad and there is nothing to do but buy a new cartridge… It happened to me and there are quite a few online forums complaining about the issue. Sometimes they are bad before you even use them so save your receipt. Also, you can buy a new cartridge then turn around and take back the bad one in place of the new one and just say it didn’t work… kinda shady, but after buying the ink over and over for the same problem – you can rationalize it with your conscience/morals.