So 2 days ago I try building a computer for my brother nothing to fancy. I only got from the other computer the hhd which had windows 10, the cpu, and the ram which was working fineOn the old computer . Specs are mobo: msi mpg-z390 gaming plus cpu: i5-7400 3.0 gpu: gtx1650 8gbs ram ddr4 2400mhz. CPU cooler master hyper 212. PSU is an EVGA 600W. So I plugged everything in and the computer is powering up you can see the fans working even the gpu fan working but nothing on the screen I also noted there was not power going to the mobo USB portsNot even the from usb3.0. I tried plugging everything out and back in still didn’t work I got a new hhd still same thing black screen. I’m thinking maybe a got a bad new motherboard? Help please