It would appear the voltage regulation on the motherboard took a hit (PWM) at the least. This would explain the high cpu temp, don't run it until you find another board to test the cpu in. If that comes out ok you can probobly get away with just a new motherboard.
While not infering anything about rookies, you might ask a friend to help you out. Read the link at yahoo and your comments, I especially liked the comment by the
"certified technition" who cleary is not one, at least not for computer hardware.
Bottom line everyone is capable of doing this kind of work, but not until you've been shown. I have seen hundreds, no thousands of mistakes by home users and yours is no different. Based on my experience your PSU is ok and the cpu may well be also, but I'm 99% certain the board has had it.