These model carts don't use a resetter like some other models. The "127" model carts have a small battery behind each chip, which resets the ink level when the two reset points are touched on the face of the chip. Have you tried resetting the black cart following the reset procedure in your cartridge instructions? If so, and the ink level doesn't reset, then it may be the battery doesn't have a good connection, or has reached the end of it's life.
Please let me know so I can help you get past this and back to happily printing.
Best regards~ Dana