2 new computers neither will post

[Drkrize]

So I feel like I am doing something wrong here and I am hoping someone can help. I am building two new computers (one for me and one for my partner) with identical parts and both seem to be having issues. Here is the parts list:

 

CPU: Ryzen 3700X

Motherboard: Asus X570 TUF Gaming (Wi-Fi)

Memory: Corsair Vengeance (CMW32GX4M2Z3200C16 checked with motherboard and this memory is supported) 

PSU: Corsair RM750i

Graphics Card: Gigabyte 2070 Super (GV-N207SGAMING OC-8GC)

SSD: Samsung 860 Evo (although there is nothing on it)

Monitor: Asus PG279QZ

 

So with everything installed I am not able to get either computer to get to BIOS. All the fans turn on and run normally, the motherboard has an RGB strip that lights up so I know its getting power. The motherboard also has the 4 LED indicators that normally tell you if something is wrong and they are all off. I have tried going down to one stick of RAM, used different monitors, plugged the display into both the GPU and motherboard, reset the CMOS battery. I am really at a loss. I talked to Asus support and they just funneled me through the normal troubleshooting stuff and then told me to RMA the boards. I mean it is possible I got two bad boards but that just seems so unlikely. Any other thoughts or should I just swap the boards and hope for the best? 

[emosun]

have you tried a totally different monitor and connection type (dvi , hdmi , dp)

[Drkrize]

Just now, emosun said:

have you tried a totally different monitor and connection type (dvi , hdmi , dp)

On the one monitor I have tried both HDMI and DP to both the graphics card and directly to the motherboard. I also tried using an HDMI to a spare TV I have. 

[emosun]

for diagnostics , take the gpu out entirely and only work on getting the boards onboard video to post , (if it uses onboard video)

also , run it with only a single stick of ram , no hard drives connected , and make sure your cpu power plugs are in