Asus WRX90 & Threadripper Pro 7975wx build not turning on. Anyone else experienced this?

[Nick83]

I just finished my new build but it is not powering up. The lights are on on the motherboard showing power to the on button and the reset button is green. There is no error messages or codes. When I press the on button, nothing happens. The fans do no spin and the LEDs do not switch on either for the fans. I have checked the sockets and they appear to be fully wired up correctly. The PSU has the pin inserted to turn it into one rail as the MB require it to be run off one rail. I have only inserted one stick of RAM into the slot. Surely the fans would switch on and lights would power up too?

Asus WRX90e Sage Motherboard

AMD Threadripper pro 7975wx

Corsair I170I Elite

Kingston Fury KF564R32RBE2K8 6400 Mhz 8 x 32gb

Be Quiet Dark Power Pro 13 1600w

I flashed the bios and no luck. I even removed the cpu and hit the on button but it still doesn’t turn on. I am so confused. I have tried this with two different boards and I can’t believe they are both broken. I have used the PSU in another computer and it worked.

Any suggestions would well received. I have no idea what is not working.

[tristansummers]

What I would do, based on getting mine to work.
Tr6 has to be tighter than tr4 so the old torx wrench might not get it secure.
Install a cooler and two sticks of ram in the correct first two slots and push both sides really hard. They are too slim and it’s really difficult to get them seated properly.

Install a gpu with one monitor on the hdmi port only
Disable the on board vga switch.
Check all switches are on the default position
Try a proper single rail psu. These motherboard are very temperamental to power, blew my 1600w superflower.
Been fine since i replaced the psu.
My guess is the psu.