How do I stop the message of 'Missing or damaged cartridge

SOURCE: Printer will not recognize the new cartridge installed.

Solution
Follow these steps in the order presented to resolve the issue.
NOTE: If error messages also display on the computer, clear the error messages after each of the following steps. You might have to delete pending print jobs from the print queue on the computer to clear the error messages.

Step one: Perform a power reset
Follow these steps to reset the product. Make sure you connect the product directly to a wall outlet and not a surge protector or power strip.

Press the Power button ( ) to turn off the product.
NOTE: The product might not turn off after pressing the Power button. Continue to the next step regardless.
Disconnect the power cord from the rear of the product.
Unplug the power cord from the electrical outlet.
Wait 30 seconds.
Replug the power cord into the electrical outlet.
Reconnect the power cord to the rear of the product.
Press the Power button ( ) to turn on the product.
If these steps resolved the issue , there is no need to continue troubleshooting.
If the issue persists , see the next step.
Step two: Clean the electrical contacts on the printhead and inside the product
The ink nozzles on the printheads might clog if you expose them to air for more than a few minutes. The ink nozzles also might clog if you do not use the product for long periods of time. Follow these steps to clean the electrical contacts on the printheads.
CAUTION: Follow these steps carefully to avoid damaging the sensitive electrical components.
Make sure that the product is turned on.
Open the top cover of the product.
Press and hold the OK button for five seconds. The carriage moves to the left side of the product. Release the OK button.
Wait until the carriage is idle and silent.
Unplug the product power cord from the electrical outlet.
NOTE: Do not turn the product off by pressing the Power button ( ). This causes the carriage to move out of reach.
Lift the printhead latch.


Lift the handle on the printhead that the error message indicates is missing or damaged, and then pull the printhead out of its slot.

Use a dry, soft, lint-free cloth to remove any ink from the electrical contacts on the printhead.
CAUTION: Wipe only the electrical contacts. Wiping the ink nozzles, located on the underside of the printhead, can damage the printhead.Do not touch the nozzles. Doing so permanently damages the ink nozzles, and the ink stains clothing.
Figure 3: Electrical contacts and ink nozzles

1 - Electrical contacts
2 - Ink nozzles
Wipe the electrical contacts with the swab until no ink residue remains.
Wipe the electrical contacts with a fresh cloth to dry them and remove lint.
After the electrical contacts on the printhead are clean and dry, place the printhead on a sheet of paper or a paper towel. Make sure that the ink nozzles face up and do not touch the paper.

1. Use a fresh, dry, soft, lint-free cloth to clean the electrical contacts inside the product. Figure 4: Clean the electrical contacts inside the product
   
2. Allow at least five minutes for the contacts to dry. Check the contacts for lint or debris, and then dry or clean the contacts again if needed.
3. Plug the product power cord into the electrical outlet.
4. Press the Power button ) to turn on the product. 'Printhead missing or damaged, replace the printhead' displays on the control panel.
5. Insert the printhead into its color-coded slot. Press down firmly on the printhead to make sure the electrical contacts touch.
6. Pull the printhead latch all the way forward, and then press down to engage the latch. If the error message indicates that both printheads are missing or damaged, repeat the steps in this procedure to clean the other printhead.
7. Close the top cover of the product. The product restarts and then prints an alignment page.

SOURCE: I have a HP Officejet Pro L7680 and have enjoyed a

hi,
the yellow cartridge is '' Y" and not K , you have a problem with the black carteidge "K" replace the black and tell me what is the new message, i will help you. i'm online

SOURCE: I inserted non-HP cartridges into

Turn off your printer
Open the cover
1 .move the cartridge carrrier manually to the center manually with your hands from left to rgiht ( 5x )
2 .Open the cartridge carrier Remove the cartridges used a clean paper make sure its dry wipe the area where the ink goes out make sure its clean specially the gold plate .CLean also the area where you return your cartridges also the contacts on the cartridge carrier make sure its clean OK .
Then return it again

You may also do that when your printer is on

1 . Open the cover first wait for the carrier to move to the center
2.thats the time you will remove the cartridge and clean and clean the cartridge carrrier
3.open again the cover reinsert the cartridges
make sure its close properly
Hope it help ..
If still nothing happens probably you have a fake cartridge which is not recognized by the Hp printer Ill be advising you to return it back and asked for a replacement OK