Is my motherboard or CPU damaged

Wundae

Commendable
Jul 17, 2016
1
0
1,510
Hi, a few days ago is was playing on my computer when all of a sudden my computer just died (like if the power went off). I tried to turn it back on and for a split second the fans would turn and then nothing if you pressed the power again. I had recently re enabled SLI and thought that I may have overloaded the PSU and caused it to fail. Tried the paper clip test and nothing happened. Bought a new PSU that was more powerful so as to rule out future overload but when we turned the computer on I saw a little bit of smoke before it would die. As it turns out the top GPU was sparking/flaming and we thought it may have been shorting to the mobo right over the chip set cover. We covered the spot near it in electrical tape so as to see if would still happen and it did, leaving a burn mark on the tape which lead us to believe that it was just burning rather than sparking to the mobo and shorting it. we took it out and moved the second graphics card to the first slot. it seemed to work fine and boot up normally, everything seemed to be undamaged. Maybe half and hour after that it died the same way it had originally. We take out the the remaining GPU and plug the monitor into the mobo and run it of integrated graphics. It runs for about 2 minutes before it dies like all the other times.

I've looked around and haven't found anything quite like this and was wondering whether my mobo, CPU or both are damaged
 
Solution
MB most likely but can't discount CPU either if faulty and if MB sent some stray power to it. Just some of the reasons I emphasize PSU quality, relatively cheap component that can blow up more expensive stuff.