Why I ask is that many (I did not research your printer, you do that) HP printers use the date and time off your PC to block use of old cartridges. Example at http://www.mrtweak.com/laptop-and-desktop-hardware/stop-expiration-of-hp-inkjet-printer-cartridges/
Now go check your cartidge date and your PC's date and time to see if that's it.
Good luck since the alternative is a dead printer.
The light keeps flashing empty and won't stop. As a result, can't even print a word much less a page.
The printer is an HP DeskJet 5550.
It's the black ink that's in question.
I've Googled the problem and have tried tons of things, such as :
-turning off printer, waiting 30 seconds (and once several hours), trying again
-cleaning off conact points, reinserting cartridge
-cleaning off contact points, disconnecting printers cable & plus & shutting it off - waiting 1 minute then retrying
-tried inserting new cartridge repeatedly and then seeing if it's recognized
-turning off printer, disconnecting usb cable, & unplugging it then waiting 1 mintue and retrying
I did remember to take off the protective tape on the ink side after initially forgetting and I put it in with the tape on - maybe that's it, perhaps this confused the printer so now it won't recognize it. If this is the cause, how do I correct it?
Anyone know how to fix this so it recognizes the new ink cartridge?
Thanx for any help