Display Code: C9C70000 - HP Support Community - 6261105

Hi! @Caliope17, Thank you for visiting the HP Forums! A great place where you can find solutions for your issues, with help from the community!

I understand you are getting the printer was not shut down properly C9C70000 error on your printer.

Don't worry I'd like to help you out.

Did you make any changes to your printer?

Try the steps recommended below.

In some cases, removing the ink cartridges and resetting the printer can clear the error message. Turn on the printer. Wait until the printer is idle and silent before you continue. Disconnect the USB cable from the rear of the printer. If your printer has a network or wireless connection, leave it connected. Remove the ink cartridges from the printer. With the printer turned on, disconnect the power cord from the rear of the printer and from the wall outlet or power strip. Wait at least 60 seconds. Plug the power cord back into the wall outlet. NOTE: HP recommends connecting the printer power cord directly to a wall outlet. Reconnect the power cord to the rear of the printer. Turn on the printer, if it does not automatically turn on. The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up period finishes and your printer is idle and silent before you proceed. Reinsert the ink cartridges, and then close the ink cartridge access door. If you receive a prompt to print a calibration page, do so. If you disconnected the USB cable, reconnect it to the rear of the printer. Try to print.

If the issue still persists try updating the printer firmware and check if it helps.

Update the printer software using this link.

Let me know if this works! Have a great day ahead!

Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution. Click the "Kudos, Thumbs Up" on the bottom right to say "Thanks" for helping!

A4Apollo I am an HP Employee