Hey LydiaMae,
I see you are having an issue of an Ink System Failure by the thread you have posted on. If you have performed all the steps in the Ink System Failure troubleshooting document linked above, then the next step is going to be to Service the Product (product replacement).
Do you know if your printer is still in warranty?
- Click here to check the status of your device's warranty.
If you need to contact HP Tech Support please click here.
Hope this helps,
Jason