I didn't notice any sort of switch to what your discussing, Curtis. Your implying that if I changed the PSU and had the case of it might have not booted because of this.. Well yes I had the case off when testing it with the new PSU... But I didn't see a switch inside and I don't think this comp would have one if you said "sometimes properietary computer cases.." since this is an older pc.
All is good... I still have the psu, when I get time maybe I will put the case on and try but I doubt it will do anything. I think the mobo is gone.