Orange triangle is on

This state can be reached in the following circumstances:

• Paper tray is empty
• Door open
• Paper jam
• Misfeed from tray

Action
Verif that the print cartridge is present and that the print-cartridge door is closed correctly.
Verify that media is present in the input tray
Clear any jams and perform paper-path functional checks.
To reset the printer after a jam, press the Go button.
You might need to clear the error manually, and press the Go button or close the top cover.

You already trying this and was not repeared.
You must check the paper sensor manually. Open the input tray and remove it. Check manually the sensor near the pickup roller. (right side) If the led are still orange and not move to the green one (ready state) then is a problem with your sensor position. It must remove the paper pickup roller and put the sensor in corect position, you must see the delimitation for correct position sensor.

I hope this help you.

hi! I will be glad to assist you in this issue, here is the link in order to fix the issue..

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=410622&prodTypeId=18972&prodSeriesId=410622&objectID=c00230632