Mother bored won’t turn on even though power is going through and MB leds on

[Alex lovick]

I have a Asus b250F Gaming motherhood and I’ve got everything pulled in as needed When the psu is on the Back leds are on so clearly power is running through it but when I try to either jump the connector pins or use the power switch nothing happens and the mother board doesn’t come on what could it be ?

Parts
Asus B250F gaming motherboard
I7 - 8700
Strix gtx 1070
Cooler master 650W PSU
16GB Corsair vengence RGB 3000Mhz RAM
Samsung 120GB ssd
Seagate 1TB HDD

 

[Cycloid Torus]

Something is shorted or loose. Try rebuild outside of case.
https://linustechtips.com/main/topic/184649-testing-pc-outside-of-case-before-assembling-in-case/