User Activity

After getting ink cartridge unstuck, I attempted to print.  It would not print.  It displayed the following message:  "No paper/ink!  Check the paper and ink and replace if needed.   L/P/C"  I did so but with same outcome.
Has anyone had a false message "No paper/ink" when there is clearly paper and ink loaded?  Is there anything I can do or should I just throw the printer away?