Ok here's my problem. I turn on my computer, leave the room for a min. come back and I don't hear the fan making noise and see a little smoke so I quickly turn off the computer. I took off the fan to look at the cpu and it's a little dark on one of the corners; I have a duron. I get a different fan and put the cpu back in with it and turn on the computer. It starts to run for a while but nothing shows up and after about 15 sec. the computer turns off. I take out the cpu and fan and try to start the computer without them and the computer starts just for a split second then turns off again. Anyone know what could be up? I'm guessing my cpu is done for.