Place the clogged cartridge in about 1/4 - 1/2 inch of warm water for a few minutes. When ink starts to slowly leak out, take the cartridge out of the water and dry it using a soft cloth to "Q-tip." Place it back in your printer and run the print head cleaning utility that comes with your printer software. You may have to repeat the process several times before printing quality is reestablished. If your print head is destroyed you will have to buy a new cartridge, as print heads cannot be repaired.