motherboard or psu broken

[szt]

i recently plugged tried plugging in a fan into my psu i used a 6 pin to 2xmale molex to connect it when i did it the fan came on but went on and off like 3 times pc then turn off tried to start it back up all it did was idle i thought i exploded my psu so i tried my backup still the same thing also tried a back up gpu same tho it did beep a few times when i pressed buttons on the keyboard a billion times but then it would show no display but the intergrated graphics worked (akward) and thats with both psus and gpus i just recently took everything apart to rebuild still no posts so the few times i got a post it took about 5-6 mins pretty brutal i took it to a comp tech and he guessed it was my motherboard im unsure what to replace anyone have any ideas or experience with this situation haaaaaaalp

 

[hey69]

Well its sounds like the motherboard indeed.

 

[szt]

Well its sounds like the motherboard indeed.

ya was just unsure bc it came on a few times but took forever
just seems weird plugging in a fan can cause something weird like this to happen

 

[hey69]

well not much left to test . if you have more then 1 dimm, try to swap one out to test if that makes a difference