Did you properly or surely remove the sealer on the cartridge? If you did it, then you should try the following below:
1) Take the cartridge off and put it back, make sure is in the right way.
2) Push the cleaner bar all the way were it belongs.
3) Press the "on" button for 10 seconds.
4) Disconnect the printer and have re-start.
5) Call a friend that knows about electronics.
Also, you could check HP's website. You can troubleshoot your particular problem here:
http://h10025.www1.hp.com/ewfrf/wc/docum…