Computer Troubles

We have our air conditioners out so we have the windows open and fans blowing to help with the stuffiness of our place, and yesterday, Greg and I were sitting on the couch watching T.V. when all of a sudden we smelled smoke, we thought maybe the neighbors were smoking something other than cigarettes, and we look over to the window and see smoke billowing, my thought was wow, they sure are smoking lots to come into our place :) But by then, Greg was over at the computer ripping the wires out of the computer. It was our computer smoking, boy I tell you, that was quite scary. Can you imagine if we were not here right beside it, because it happened extremely fast. One second, Greg said the computer shut off and went to reboot, and the next you see smoke billowing out. Greg figured out that it was the power supply, which we have had for about 4/5 years, so it's done its job. So we went out and got a new power supply so now we can use the computer. I hope nothing else happens to it, especially when Greg is not home.