Question Computer won’t display, Help!

Jan 19, 2020
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A friend of mine just built a pc, and when he connected it to the monitor, it wouldn’t display. He returned every part and got a replacement. It still won’t display. Mobo is asus prime x570 p, Ryzen 7 2700x, Vega 56. I’ve swapped the ram with different brands and modules just in case, but to no avail. I don’t know if it needs a bios update to run the 2700x or not. Also, all the components run / light up. The fans in the case run at 100%.