Just NVME. It doesn't specifically identify the device which is a “Silicon Motion AZW 512G NV428” in the boot menu.
I looked up the specs for that drive, it is an SSD not an NVME, so i don't think the "NVME" showing up in your bios is actually the disk that is installed.
What you can do: make a bootstick with ubuntu and boot into a live environment (i.e. don't install ubuntu, just use it form the stick). You can use the Gnome disk utility to check on the drive [1], see if it is detected.
If it is not detected: it might have come loose or just sit slightly wrong and opening the device an reseating it could fix it. You could also try installing the disk in a different computer and see if it is recognized.
However, I have no idea what country you are in and if this would void your warranty. So check that first.
Alternatively, if the S.M.A.R.T. check tells you the disk is borked or the disk is not found, you could send the computer back, if it is still in warranty. (See also the EU website on return policies, should you be in the EU [2]. Don't take what I am writing as legal advice, I am not a lawyer).
If it is not in warranty, you could replace the disk yourself, it's generally not hard, see if you can find a tutorial on how to open and remove pieces from your device. Since the disk is not soldered on, you can just put a new one in. Just make sure to get one that fits (See M, B and M+B keys)
[1]:
https://askubuntu.com/questions/528...-a-ssd-or-hdd-on-current-versions-of-ubuntu-1
[2]:
https://europa.eu/youreurope/citizens/consumers/shopping/guarantees-returns/index_en.htm
