No SSD, but because I can't give it a drive letter, I'm sure that's why. Storage section only shows C: drive to scan. When I remove the storage space, it was removed from Disk Management also. Then if I went into Disk Management it would show where I could format it to NTFS, but not initialize or set to GPT. I could get the drive to show in Disk Management if I went to System -> Storage -> More Storage Spaces -> Manage Storage Spaces -> Here I could see the drive and make it a storage space (which I don't really want to do) and set a drive letter.I've checked Windows Update about 5 times today and everything is Up-to-date. Standard NVME Express Controller (Updated -> Using Best Driver)

Microsoft Storage Spaces Controller (Updated -> Using Best Driver) Standard SATA AHCI Controller (Updated -> Using Best Driver)

In Device Manager I've got the following drivers:.

In Device Manager I removed the IDE ATA/ATAPI Controller, restarted and let it reinstall.

Ran driver updates in Device Manager and shows using best driver (no yellow errors icons).

(Only one available m.2 socket so can't try in another and I don't have another computer with m.2 support)

Pulled and re-installed in the socket.

Did not find any issues and did not find drive.

Ran Memory Diagnostic Tools - I read this has helped some people with this issue.

I've been searching for a solution for the past two days and tried several things but none have worked, so I am finally posting. Not sure why this would not be plug-play. The issue is that the drive shows in the BIOS under Device Configuration -> Hard Disk (M.2 512gb PCIE SSD) and also in Device Manager (Disk Drives -> PCIe SSD) but it does not show in Windows in Disk Management, where I would expect to be able to initialize, set to GPT, set drive letter and format (NTFS). Added a second drive (m.2 NVME PCIE 512gb SSD) to my desktop using the open m.2 slot.

Disk management not showing