I was testing out an old 486 motherboard with an amd 5x86 133 mhz that wasn't working last time i used it(3 or 4 years ago) and i was suprised it worked but after running scandisk on an old hard drive for a hour something on the motherboard popped and caught on fire briefly. I'm not sure still what caused it i think it might have been because i didn't have any standoffs in the motherboard but from what i read the computer wouldn't have booted at all if that was the case and it didn't look like the motherboard was touching any part of the case anyways(besides the screws). Also from what i know of electrical things I don't think it was a capacitor or resistor maybe a fuse though? there are alot of them on the board and they are orange and blub shaped. All i had connected at the time was the bare essentials needed for it to boot plus two hard drives and a floppy and the case was open the whole time. I tested it again later and it did boot up ok but i didnt leave it on after it booted. So my question is what made the thing catch on fire and will it run reliably from now on if its setup up right? I can't seem to find anything on this exact subject so this is my last hope before i have to ditch it and buy a used motherboard somewhere.
