Message – Cartridge is MISSING or WRONG – HP Support – 15, 17, 21, 22, 23, 27, 28, 41, 45, 54, 56, 60, 61, 62, 63, 65, 74, 75, 78, 92, 93, 94, 95, 96, 97, 98, 901

The copper strip on the back of the cartridge is very sensitive to static discharge, and can also be disrupted by the oil from skin, or residual water. Take a moment to gently brush this strip owith a piece of paper towel, then reinstall it.