If you refilled a fresh cartridge and found it is not working, it is likely that refill process introduced air bubble to the bottom of the cartridge. Let the cartridge sit overnight, and the cartridge should be able to print again. If the cartridge is old, the print head may be clogged by dried ink, dirt, debris, or physically damaged, the cartridge will not work.
If your cartridge looks like the picture above, follow this link to see how to solve this problem. https://www.bchtechnologies.com/blog/solved-black-and-color-print-head-clogged-not-printing-part-i-integrated-printhead
We are making more tech blogs for other kinds of cartridges/printheads.