Answer to "Printhead appears to be missing not detected or incorrectly installed"Non OEM Ink ruins the printer period. Not even a new prinhead will save it. Throw the printer in the trash dumspter and go buy a new one and never use non OEM products or generic ink/toner EVER.
Answer to "How to reset page counter for ink absorber full (error 5B00)?"It means its time for a new printer. Dont waste your time trying to reset the ink absorb counter. It wont work.