Laser Printer does not recognize new cartridge

[DonM53]

tried two HP79 toner cartridges for my MFP26nw Laser printer and get message"Install Black Cartridge

[Meghana_10]

Hello @DonM53, Welcome to the HP Support Community. 

Thanks for reaching out about your query regarding the HP MFP266nw LaserJet printer.

We appreciate the opportunity to assist you and are glad we could help work toward a resolution. We hope our support has been valuable.

To help us get started on resolving your issue, could you please try a few troubleshooting steps provided below so that I can assist you further?

Use genuine HP cartridges

• HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue.
• To check the authenticity of your cartridges, go to the HP Anti Counterfeiting and Fraud Program.
• Purchase genuine replacement ink or toner cartridges from local retail stores or from HP www.hp.com/go/suresupply.

Check for packing material in the printer

Check the toner cartridge and printer for any packing materials and paper that might be causing the error message.

Note: The following images might show a different printer than your model, but the steps are the same.

• Turn off the printer.
• Disconnect the power cord from the printer.
• 
• Open the toner cartridge door.
• 
• Look for and remove any packing material such as cardboard, tape, or paper debris.
• 
• Remove the toner cartridge.
• 
• Look for and remove any additional packing material or paper debris inside the toner cartridge area.
• Check for and remove the orange tab on the toner cartridge.
• 
• Check for and remove the protective sealing tape on the toner cartridge. To remove the protective sealing tape, pull the tab away from the toner cartridge, and then discard.
• CAUTION: If toner gets on your clothing, wipe it off with a dry cloth and wash the clothing in cold water. Hot water sets toner into the fabric.
• 
• Gently rock the toner cartridge from front to back to make sure the toner is distributed evenly.
• 
• Insert the toner cartridge into the printer, and then close the toner cartridge door.
• 
• Reconnect the power cord, and then turn on the printer.

Take care and have an amazing day!