'ink system failure, please turn printer off and then on'

[Brigitte3]

My printer did not print well due to the black cartridge being almost empty. I changed it with a new one, but then printer gave an error saying 'ink system failure, please turn printer off and then on'. I did this, but once I switch it on the message appears again. I have plugged everything out and put it back in, but still, the message occurs. None of the functions on the printer seem to work while the message appears. I did put the old cartridge back in to see whether it makes a difference, but still, the message appears. How do I fix this? 

[Rainbow23]

Hi @Brigitte3,

Welcome to HP Forums, this is a great place to get support, find answers and tips.

Thank you for posting your query, I'll be more than glad to help you.

I understand that you are facing issues with your HP Officejet 6500 All-in-One Printer wherein you get an error message Ink System Failure.

This issue could occur the nozzles of the printhead are clogged or the printhead is defective.

Let's go through a few steps to troubleshoot this issue.

And here's the step by step guide for you in the link: Ink System Failure

Let me know how this works.
 

You have a good day ahead.