I have the exact same issue. The laptop constantly reboots if running from the nvme, but works fine when running OS from a usb. I did not think it is a bios but if someone could take a look it would be greatly appreciated.

Legion 5 Pro 16ARH7H
SN: PF3T7DHJ
Board: NM-E471 REV:2.0...

hi,

my original problem was that the laptop would not boot to windows just to bios, a standard problem with gigabyte laptops that I thought could be resolved by flashing the bios with the gigabyte tool from usb. However, after flashing, the laptop would not turn on. I then flashed the bios with the 2023 bios version provided in this thread, the laptop boots into bios, it does not recognize nvme drives and more importantly it shuts down after a couple of minutes regardless of whether I boot to bios or Hieren's. I am attaching the original bios, but I believe it has been wiped after...

HI,
is it possible to reupload this file? I am getting the invalid file error.
Many thanks....