New pc boots but no display and no usbs are working

Jun 19, 2018
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So as the title says , I just booted my new pc and I can see everything working , lights , fans etc but nothing is being displayed on monitor and no usbs are working .
I tried to remove battery and tested on my gpu as well as onboard graphics still no display .
MOBO is msi b350 tomahawk
Rams ballistic gaming 8gb ddr4
CPU is ryzen 2400g
Ssd Samsung evo