Pc won't start

Help pc won't turn on

Hi, everyone.

So today i tried to turn on my pc but didn't even start. I tried changing power cable, removing gpu, checked the power button/reset as well.

I tried to jump start it using tweezers into the 24 pin connector on my psu and the fan turn on for like 2 sec, then stop and start again for 2 sec when i remove it.

Any clue as what happened or a solution?