M.2 drive wont show in BIOS or windows setup :(

[Lukiepoo]

I have recently built a new PC with a Prime b450 plus Mobo, 2tb hard drive and a xpg 256gb m.2 drive. When i first built the computer, i installed windows onto the m.2 drive and it worked perfectly fine for a week. However, one day i entered my bios to see my fan speeds, left the bios and i got a windows boot error: 0xc000000e. I had read that this could be due to a file corruption, so attempted all the possible repair my pc options, however none worked as i am presuming the m.2 became unavailable at this point. I have tried reinstalling windows onto the drive, disconnecting the hard drive however the m.2 still doesnt show. I even went to the extent of dismounting the m.2 physically and reinstalling it, to no joy as it still did not show. I installed windows onto the hard drive itself and it works fine so the problem must be with the m.2. Any help or guidance would be highly appreciated!

[Spakes]

If SSD works in other machines, the problem lies within BIOS settings. What helped me, personally, is turning off RAID mode and switching it to usual UEFI. That was the problem.when I tried to create DualBoot on my laptop with NVMe SSD.

If SSD isn't going to work in another PC, try more PCs. If to no avail, prepare to RMA that bitch.