Question M.2 shows up in BIOs but won't boot

[Wokingpanda]

I have a PC that has been working fine for a year now. Suddenly when turning it on, it only boots to BIOs. When trying to boot from my M.2 it does not show up. It does show that something is connected. When I try to re install windows it fail to partition the M.2. It is a Samsung Evo 970

 

[LinuxDevice]

I'd create a bootable Linux CD/DVD (which can also be put on a USB thumb drive) and boot to that. The first NVMe will show up as "/dev/nvme0n1". I'd then view it with:
sudo smartclt -a /dev/nvme0n1

Or specifically, check error listings:
sudo smartctl -a /dev/nvme0n1 | grep -i error

 

[bdcrlsn]

When you're trying to reinstall Windows, does it show the correct capacity of the drive on the drive selection screen?