It looks like fixing the CMOS resolved the issue. A-XMP turned on + UEFI boot and my NVME is now visible in both Windows and BIOS consistently! Restarted several times just to confirm. Appreciate it!
It looks like fixing the CMOS resolved the issue. A-XMP turned on + UEFI boot and my NVME is now visible in both Windows and BIOS consistently! Restarted several times just to confirm. Appreciate it!