HP Office jet Pro6978 won't print in color only black. new color cartridges installed

[Rick329]

HP Officejet Pro 6978, less than 2 years old. Prints fine in black but wont print in color. Installed new HP ink cartridges. Cleaned print heads lots of times w/no change. Reinstalled printer and drivers w/no change. 

Any suggestions?

[Nal_NR]

Hi @Rick329,

Welcome to the HP Support Community. 

I'd be happy to help you! 

I appreciate your efforts in trying to resolve this issue by performing the necessary troubleshooting steps.

Try updating Firmware by selecting your current OS: Click here

Check for issues with the ink cartridges

• Low ink levels, using non-HP cartridges, and clogged cartridge vents can cause print quality issues.
• Replace any non-HP or refilled cartridges with genuine HP cartridges. HP supplies are available from the HP Store and local retailers.
• HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. Go to HP Anti Counterfeiting and Fraud Program for more information.
• Check the ink levels from the printer control panel or from the HP Smart app on your computer or mobile device.
• If any cartridges are very low or empty, replace them with new cartridges, and then try to print.
• If the print quality issue persists, continue to the next step.
• Open the door or lid to the cartridge access area. Wait until the carriage stops moving before continuing.
• Push in the tab on a cartridge, and then pull the cartridge from the slot.
• CAUTION:
• Do not leave the cartridges outside the printer longer than 30 minutes. Doing so can result in damage to both the printer and the cartridges.
• 
• If the cartridge still has the orange pull-tab attached, remove it.
• 
• Use a pin or paper clip to remove any debris or excess adhesive from the vent on top of the cartridge.
• 
• Reinsert the cartridge into its color-coded slot, and then press down on it until it snaps into place.
• Repeat these steps to inspect and clean the vent on the other cartridges.
• If the issue persists with a specific color, replace that cartridge.
• If you have a defective HP cartridge, it might be under warranty. Go to About Original HP Cartridges for page yield and HP limited warranty information.

If you have performed all the steps from this document and still having issues, either the cartridge is faulty or the printer needs to be checked. 

Hope this helps! Keep me posted for further assistance.
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