aorus b360 gaming 3 wifi

Just finished building a new pc right now. As I plug in the power cable, the LEDs on the motherboard flash once and then nothing. The specs are : Aorus B360 Gaming 3 Wifi (ATX) Intel i7 8700k 8th gen Corsair Vengeance ddr4 3000mhz x2 WD 500GB m.2 SSD WD purple 2tb HDD Cooler Master Hyper 212...