Connect both E-ATX as recommended
Set DOCP profile for your RAM
Procedure for install of windows on a new NVMe drive.
Enter BIOS, Advanced mode,
1 - Make sure you unplug all SATA and USB drives, the M.2 drive has to be the only drive installed.
2 - Go into the bios, under the boot tab there is an option for CSM, make sure it is disabled.
3 - Click on secure boot option below and make sure it is set to other OS, Not windows UEFI.
4 - Click on key management and clear secure boot keys.
5 - Insert a USB memory stick with a UEFI bootable iso of Windows 10 on it.
6 - Press F10 to save, exit and reboot.
7 - Windows will now start installing to your NVME drive as it has its own NVME driver built in.
8 - When the PC reboots hit F2 to go back into the BIOS, you will see under boot priority that windows boot manager now lists your NVME drive.
9 - Click on secure boot again but now set it to Windows UEFI mode.
10 - Click on key management and install default secure boot keys
11 - Press F10 to save and exit and windows will finish the install.
Hope you find this helpful.
It may be more than that, re set in your 8 pins connector and make sure the connector on both end of PSU and CPU are sit correctly and the rail not the issue.
I have the same motherboard and the very same issue. Tried everything, nothing helped. I found only a temporary fix - if I unplugged the main electric power cable and wait for few minutes, then plug it again it stops with this error message, but onl for few days.
I believe it’s faulty motherboard or BIOS. 🤷🏻♂️