@Carmelux Welcome to HP Community!
I understand that the black ink cartridge is not working.
Have you tried with different ink cartridges?
Please perform the hard reset and check.
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Turn the printer on, if it is not already on.
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Wait until the printer is idle and silent before you continue.
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With the printer turned on, disconnect the power cord from the rear of the printer.
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Unplug the power cord from the wall outlet.
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Wait at least 60 seconds.
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Plug the power cord back into the wall outlet.
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Reconnect the power cord to the rear of the printer.
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Turn on the printer, if it does not automatically turn on.
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Wait until the printer is idle and silent before you proceed
Please refer to the following link to troubleshoot the issue.
https://support.hp.com/in-en/document/c05538986
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