new pc turned on ones now it doesn't show sign of power

[Sofus_]

hi. i just built a new pc yesterday, i got it up and running installed windows and steam.i then turned off the computer to put in the gpu but when i clicked the start button there were no sign of power at all.

sorry for the bad grammar

specs

cpu: intel i3 7100

Gpu: xfx rx 480 4gb

Mobo: msi bazooka b250m

ram: kingston 2 stick off 4gb

psu: evga 650 GQ

 

[DRagor]

but another question if i buy a new motherboard do i have to buy a new windows license?

(assuming indeed your motherboard is down, we have not managed to verify that yet)
You do not necessarily need to buy new motherboard. That is what warranty is for - as long as damage is not mechanical (which is not in this case), you can use warranty to get free replacement motherboard. No one has to know damage was caused by your fault After all, for all we know, it could just be factory fault.