HP displays a warning message when a cartridge is half full or is a third party cartridge. The goal of the message is to trick you to buy HP's new "genuine" cartridge. Although HP is obligated by law to let us refill the cartridge, HP planted some tricks. When we insert a half-full or a non-HP cartridge, the printer will display the message "Used or Counterfeit Cartridge." We can click "Continue," "OK" or "Yes" to dismiss this message.
Another HP's trick is to show a follow-up message: "Did you buy this cartridge as a New and Genuine HP Product?" The answer should be "No." If you click "Yes," then HP can stop you from using this cartridge. This message exists in some older printers. We put it here for reference.
To summarize, here are the common warning messages:
The cartridge Is Low on Ink. Click "OK" or "Continue." If you are using a refilled cartridge, please note that this is normal and keep using the printer.
'Used, Refilled or Counterfeit Ink Cartridge Detected' Click "OK" or "Continue."
Please Note:Do not touch the copper-colored contacts or ink nozzles. Also, do not re-tape the cartridges. Doing so can result in clogs, ink failure, and bad electrical connections.