Do the fans race like mad before it happens? I had issues with my G5. First the power supply and then pretty much everything else went. Had it overhauled like twice and then I wrote to Steve Jobs and they gave me a new MacPro.
We opened it up, couldn't find any buttons. Vacuumed it out, put it back together. I went to pick up the kids, and when I got back the darn thing was off again!
We opened it up, couldn't find any buttons. Vacuumed it out, put it back together. I went to pick up the kids, and when I got back the darn thing was off again!