Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
Have you checked that all cables are securely connected?
Have you tried connecting the printer to another power supply socket?
Do you have a voltmeter available to carry out some tests on the power supply adapter?
Ok, can you try turning it off again, then check for any stuck pieces of paper inside it, wait a couple of minutes, then turn it on again and let me know the status before you try printing again?