HP Deskjet Ink Advantage 5525. I have bought original cartidges. The black one was identified by the printer as counterfeit for some reason. I replaced it with another original. The printer stopped printing black ink. The diagnostic page shows the box where the black was supposed to be as white. I have tried all the options to clean the printer. no result. This is the second printer in two years that has the same issue. I AM DONE with this company. This is scandalous. It is obvious that this is a firmware/software issue that blocks the printer from using the black ink. I will never buy HP for personnal use, or for my business ever again, and I urge everyone to do the same. Enough is enough.