Hello. I am haing a problem with an HP2500C printer. I was getting error messages stating that the black print head was defective, so I replaced it. Then, I started getting errors that the cyan ink was low, so I replaced it. FYI: This printer will not print if there is ANY sort of error message. Things worked fine for about a day. Now, I intermittently get the message that the cyan print head is defective. I have cleaned and reseated the print head and the message will go away....but....now I consistenly get the message that the cyan ink is low. It is a new cart. I cleaned and reseated the cartridge, but the error message is still there. The cartridge not only feels full, but I can hear the liquid when I shake it. Any suggestions would be great. This printer was always a bit of a problem in the past with jams, but I decided to pull it back out and use it on the network. Thanks very much in advance! Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com