Recently I buy HP combo FAX and color printer, I attached to my computer. That time I take color and black color print also, but after some days I just checked the BLACK due to the fact that I have a long run to print. But when I insert cartridge in printer and try to take print out, that time my computer give error message and when I saw the cartridge that time I keep getting my HP printer "BLACK INK LOCKS OUT". Then remove the cartridge and replaced this Black so many time but still it will not accept it. Give me some solution for that.