No, I did not remove the board. I didn't give it a thought about a short between the board and chassis. So maybe I'll try that. I have upgraded a number of pc's with new mobo's, cpu's, memory and power supplies. I was not really wanting to do a reinstall, that is why I was trying to figure out what had happened and can it be repaired. All the devices in the chassis are still good and workable so a new board, cpu, etc. is not out of the equation. So anyway, I may play some more with it. I was able, before it went out totally to move all the important data files to an external, so I'm not panicing. As for another machine, I don't need all those extra parts laying around. I have enough already. (pack rat heaven.) Thanks for your input and if I decide to continue, I'll let you know the results.