I have an HP7612 - just moved it to a different room and it won't stay powered up. It's plugged directly into the wall, the light on the external power pack lights up fine. When I plug it into the printer, the printer automatically powers up, gives a message that you should always power down using the button, then the printer shuts down and the external powerpack light goes off. My husband moved the printer for me and I'm guessing he did not power it down first. But I'm thinking there should be some way to recover from this! Any ideas of what else I can try?