Today I went over to micro center to pick up a new cpu I have a ryzen 7 2700x. I upgraded to a 7 5800x and Got home switched out the cpu and had this problem. I figured it might be that I need to update my bios. so I figured I will install my old cpu and download it that way. So I did that and to my surprise I got the same problem I have not been able to find a way to fix it. So I come to you guys and hope someone has a solution.
Ryzen 2700x (trying to install a 5800x)
Tridentz 4x8 ddr4
tomahawk 450
Evga 2080ti
Corsair RM750x