Need really simple advice re printer ink cartridge.

[CTyankee]

We have an HP LaserJet Pro 200 color printer. Usually hubby changes the color cartridges. Easy and always works fine. But we now have a black hp LaserJet black print cartridge that makes a terrible noise when we print and prints out copies with black stripes and blotches on the paper. This has never happened before.

Something is obviously very wrong. Is the cartridge defective?

I suggested to hubby that we go back to Staples with the defective cartridge and get a new one. Hubby says "It's getting better. It's not as blotchy."

If it weren't so infuriating it would be funny. I think he just doesn't want to admit defeat.

What has gone wrong? Needless to say we're not very computer savvy...LOL...