Question 8pin motherboard 4pin psu, monitor led blinking, black screen

Ray Plays

Reputable
Mar 19, 2019
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I purchased a new Dfi Lanparty dx790 fx motherboard, and when i successfully build into my case and press the start button nothing happened, my cpu fan and psu fan started, the screen led is blinking but the screen is black and nothing happened....

I think the probleme is my psu, because it has only 4pin cpu power connector and the motherboard has 8pin...by the way i didnt know..because my cpu cooler works when i start it🤔

Whats the problem? Why my screen wont display anything?
Thanks🙂