I have an HP C310a printer photosmart. It needed a black ink cartridge. I put it in and it works great. But, now the color inks won't work. Grayscale is not checked. Color is checked. I ran a diagnostic page and it says everything is good.
I have tried the link above and even went out and bought new cartridges and it still does not work. On the computer it tells me the inks are full but when doing a test on the machine in the settings It shows I have magenta, black, yellow. NO CYAN NO PHOTO eetcc I have tried contacting HP and they lead me to the same procedure as their web page. what else could i do. One printer is just out of warranty and the other has 2 yrs warranty