Hi. One thing that bothers me about this is you said that after you shut down, you set the Computer in front of the A/C to cool it down. I don't think that was a good idea. In all likelyhood, there was a lot of humidity present. When you set that thing in front of the A/C with that cool air, there is a very real possiblity that the moist air inside condensed, leaving moisture inside your computer, not good when you turned it back on.