Question How come my newly built computer starts and then immediately shuts down?

Feb 3, 2019
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I recently built a new PC using recycled parts from my old computer, some new parts, and a used mobo I bought online



My issue is when powering up my computer, the cpu fan, case fan, GPU lights and fan will all turn on, then a second or two later it all shuts down.



The GPU boost light works when PSU is on, the onboard LED light will work and shine ON for standby power when PSU is on.



I've checked the CPU pins they are all fine, I've cleaned and re-geled the cpu/cpu fan, I checked to make sure every thing is plugged in and no pins are bent.



One concern I have is there is a bent capacitor on the mobo, it does not seemed to broken or twisted legs, the connection does not seem affected from what I can see.



is there something I am missing that I can check to further diagnosis/possibly fix? is it possible my motherboard is faulty due to the bent capacitor or its just a bad motherboard? bare with me I am new to building PCs, I don't know that much



setup:

ASUS P8H77-v mobo (used from newegg)

i7-3770k cpu (recycled)

4 4gb ddr3 ram cards (recycled)

GTX 1080 TI STRIX ASUS gpu (new)

EVGA 650 gq psu (new)
 
Feb 3, 2019
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Strip it down to no GPU, 1 stick of ram, no drives, and see if it'll boot to bios on the igpu. Make sure single stick of ram is where manual says to put it
Removed GPU, removed both drives, left 1 stick of ram in the reccomended A2 position, started the computer, exact same result, fans start spinning then shut down a second or two later, it will not get to BIOS with the igpu
 
Feb 3, 2019
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Well you just narrowed it down to cpu/motherboard/psu... Since everything else is either new or something you know to be working, I'd bet my money it's the motherboard that you bought
That'd be my thought too, I'm contacting the seller to exchange the defective motherboard, thank you for your help
 
Feb 3, 2019
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contacted seller for the mobo, he stated the bent capacitor is absolutely fine and shouldn't affect the functionality of it, if anyone else got more pointers, I'm all ears
 

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