[Yo-Yo]

Some HP print cartridges have chips inside of them that disable the print function after the ink runs out. Using an aftermarket refill kit won't reset the chip. See this MSNBC story.

Bite the bullet, buy a new cartridge, and see if the printing returns. If so, then that was the problem.

There are aftermarket places which will refill your cartridges and "reset" the chip. There's a place here in our local Mall with a pink pig as a logo, but I can't remember the name. I just buy cartridges at Sam's Club.

[mtbopfuyn]

Some HP print cartridges have chips inside of them that disable the print function after the ink runs out.

I think we have a winner. I had bought a new cartridge and it didn't even last a week. I thought it was just bad and refilled the old one with ink. If this is true then both were EXPIRED. If that's the case, I'll get kicked off if I posted what I'm thinking about HP right now.