My ink cartridges were stuck like many others. What worked for me is to tug on the cartridge and re-start it each time. After about 5-6 times, it finally turned on without an error code. I attempted to dismantle the printer case to take out the cartridge but apparently it began to work. I think it is because it was stuck somehow and my nudging etc made it unstuck!
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".