Why wont the lights on my HP PSC 1510 stop flashing? -

All of the lights on my printer just started flashing one night. They all flash rapidly and i cant do anything to make the printer respond. None of the buttons work, and when i try to print it doesnt repond. I have tried unplugging it but the problem doesnt stop.

This link will explain what the flashing lights mean... http://h10025.www1.hp.com/ewfrf/wc/docum… Cheers