That's weird. You must be mining somewhere if you are seeing the 7TH at the controller, they don't just idle along hashing to themselves.

Can you post a screenshot if your status page. That will show us where you are pointed. You might also want to double check the pool you are mining to maybe the problem is a worker name or something. Not sure if some of the pool settings would reset when you shut things off.

Edit: did you restart the controller as well when you shut everything down or just the miner?