I have a HP hp psc 750 printer that will not print. I've had it a while just never used it lately because of an upgrade, I put it away when I thought I had used up all the ink but I found 2 new, unopened black cartridges and would like to use them up. So hooked the printer up and aligned the cartridges, (left the empty colour in) it printed fine. Then I tryed a word document and only the top couple lines printed then it ran out of ink. Any ideas.
Swede1126
Swede1126