Receiver won't start, orange light on button.

So I just got my NAD T 747 about 5 days ago, and I had some bad background sound, humming and buzzing but I read somewhere that I should have all my audio-connected devices from the same power jack.

So when I turned the device off, put it into the same jack as PC and Sub.

Then I go to turn it on again, the button is orange, and does not respond when I push it or any other buttons. Tried the remote as well.

Also made sure that no open cables(Or to be correct that there where no open cables) where touching each other or alike.

Tried changing back to the other jack and directly into the wall. Pulling everything but the receiver and it still doesn't help.