My new custom pc wont work

Nov 23, 2018
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Ok so i have finally built my pc but it isnt booting it is just showing yellow color on the motherboard and i dont know what to do. I have tried to reset my bios and mpre but npthing helps. Pls help me.
Code:
 
Nov 23, 2018
8
0
10
My specs are: ryzen 7 1700 with stock cooler, asus prime b450m-a , evga 500w bq, gigabyte 580 8gb, toshiba 240gb ssd, wd blue 1tb 64mb 7200 rpm, be quiet! Purewings 2 140 mm (extra fan) , corsair 2x4 gb 2400 mhz ram and a phanteks eclipse p350x