First, power off the printer and remove the power to it (unplug the power cable)
Then on the computer, click start, type in
devices and click on devices and printers
Right right click on your printer, and click on See whats printing.
Then click on each item in the list and click on document and cancel.
Once they are all gone, press the windows key + R
Type in services.msc and press enter
Locate Print Spooler
Click it, click stop, then start it again
Once done, wait 5 minutes, power on the printer and it should now have stopped.
Let me know the results please.