iMac G5 - What Happened?

I have a beautiful iMac G5 that I had in my "chilly" office. So cold that I unhooked it and brought it into the house that was nice and warm. When I booted it up it only made it to the opening chime and first blue screen then no blue bar (indicating operating system was loading) and that's where it has hung ever since. I tried starting (letting it warm up for an hour or so) and nothing will happen. Does anyone have a clue what happened? I was very careful bringing it all of 15 feet into the house. It has worked absolutely flawlessly up until this moment. Yikes! Any feedback would be very much appreciated.

This is a bit off topic. I work on an sgi unix server once that was located in a cold server room. We disconnected the unit and moved it to another server room that was a little warmer than the other room. The server would not boot up, simliar to your problem. We moved the system back to the colder server room and the system booted up and worked find. I said that to say this, I am wondering if you move it back to the cold room would it work again.