Intervention required

I do have OfficeJet Pro 8500A Plus and I do have printing problems. Although it says the document is being printed, it doesn''t. On top of the print queue box it says 'Intervention of the user required'.

I downloaded the latest drivers, rebooted the printer and laptop, etc.

In one of the issue with the same topic I read I should use genuine HP cartridges??????

Please help, this is really annoying.

Thanks,