Yeah, I shut down. I couldn't see any button on the front - just the front cover and the little plastic thing where the light shows through.
I think the button to press is under the cover. And I tried every key I could find to no avail. I'm sure the boss has a stash of them somewhere - we have four or five servers that all use the same key. But I couldn't find any.
Oh, dear... that's such an easy mistake, too. Sorry to hear about it.