is this a canon printer using refilled cartridges if so when switching on printer hold red button down for 5seconds for each new cartrdge this workerd for me
done everything youve said, its a hp officejet 6500a plus, blank paper comes out, cartridges with a chip, and running windowsa, nothing comes on screen or on printer with error message
Now you will need to try printing from the computer. Try printing from different programs eg. internet, email, word processing etc. Check all the settings in each print window.
It printed once then blank again, I messed about and got the heads cleaned, set page alignment the could get pc to recognise printer so still not printing