Error message on my printer says, "Incorrect Black cartridge installed" but it's the correct cartridge. What do I do?

[ziperchest]

I just replaced the black cartridge on my HP PSC 750 XL but I keep getting an error message that says, "Incorrect black cartridge installed" but it IS the correct one. What do I do please?

 

[USAFRet]

Possibly not fully seated?
Is this a new retail cartridge, or a remanufactured one?

 

[ziperchest]

Possibly not fully seated?
Is this a new retail cartridge, or a remanufactured one?

 

[ziperchest]

No this is not a remanufactured cartridge. This is An HP 15 that I purchased at Staples. As far as being seated properly, I've taken it out and put it back in seveal times.