I have an HP Photosmart C4345and it keeps displaying the message that says the print cartridges are missing or not detected.
The cartridges are both genuine HP cartridges and I have tried cleaning the contacts. It appears to be a problem with the tri-colour cartridge only as it displays the message in the printer setup as well as on the printer display. I also replaced both the color and black cartridges with brand new, genuine HP cartridges today.
I have tried a reset and also tried pressing blue, green, grey and entering the special combo and selecting checksum for relock data input which isn't doing anything. When I back out of it the same error is there. Wondering if it's time to just buy a new printer? Or if this can be worked around?
Thanks