When I ran out of yellow ink, I replaced the cartridge with a new HP cartridge and it didn't recognize it as a full cartridge. I tried another and it showed as having a very small amount of ink, which it used quickly then wanted another new one. When I took that one out, I noticed it was heavy so I shook it and I heard the ink sloshing. Because I had bought the first 2 at a discount store, I thought maybe I should try one from another store, and when I tried that one, it did the same as the first replacement. Until I figure out how to fix this, I can print in black only. If anyone has any ideas, please let me know.