HP OfficeJet Pro 6978 Printer Failure error message

[tm458]

I have been receiving a series of error messages, culminating in "Printer Failure: There is a problem with the printer or print system. Turn the printer Off. then On. If you continue to get this message, contact HP. 0x6100004a"

When I turn the printer on, it tells me there is a jam (I have cleared all visible jams), then lets me know the printer was turned off incorrectly (it was not - I used the power button as instructed), then after a moment the above quoted Printer Failure message appears. I do not seem to be able to replace or clean the ink cartridges, print alignment pages, etc. while this message is showing. I am unsure what is wrong and what to do about it, thank you in advance for your help!

[Garp_senchau]

@tm458, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

Restart the Printer

1. Turn off the printer.

2. Unplug the power cord from the back of the printer.

3. Press and hold the power button for 30 seconds.

4. Plug the power cord back in.

5. Turn on the printer.

Run HP Print and Scan Doctor (Windows only):

• Download and run the HP Print and Scan Doctor tool. Follow the prompts to diagnose and fix common printing issues.

Update Printer Firmware (Update the firmware on an HP printer | HP® Support)

• Go to the HP Customer Support - Software and Driver Downloads page. Enter your printer model number and search for the latest firmware update. Follow the instructions to download and install the firmware update.

I suggest you to refer this video for further troubleshooting: Click here

I hope these steps help resolve the issue

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,