Printer Ink system failure message

[Eugene80]

HP Officejet Pro 8600 Plus

Lightly used for 2 years.  Has been working with no problem with HP 950 (black) and 951 (color) cartridges.  In the middle of printing of a 30 page document, it stopped after printing 8 pages and error statement was black ink has been depleted.  Stopped the printer and installed a new HP 950 (black) ink cartridges. Restarted the printer.  It did not resume printing and there was an error message saying "printhead missing, not detected or incorrectly installed."  Stopped the printer, removed the cartridge and reinstalled.  The same message. As HP problem solver suggested, turned the printer on/off several times, also cut off power a few minutes, etc. but nothing worked.  The HP950 ink cartridge I installed was an unused new one but one year old.  So, I purchased a brand new one and tried but the result was the same error message.  Has any one of you had a problem like this and if you did, how did you solve it?  Your help would be greatly appreciated.  

[KrazyToad]

@Eugene80

Welcome to HP Support Community

I would like to help

Please ensure you have the latest Firmware installed https://support.hp.com/in-en/document/ish_1776648-1643972-16

You can also refer to this Link: https://support.hp.com/in-en/document/c03439615

If the issue persists please contact HP Support in your region for service options

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.

Thank you

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