Question Help with motherboard noticing M.2 SSD disk (cannot find it in BIOS or Win10)

[Dalko]

I've registered here because I desperately need some tehnical help.

Yesterday i've bought new Samsung 970 EVO Plus SSD drive, which i've put onto my Gigabyte GA-B250M-D3H motherboard. Ever since then i've been having trouble with BIOS/Win10 not recognizing M.2 disk/slot.
Drivers are updated, i've tried switching between UEFI/Legacy, unfortunately cannot find CSM settings to try that, tried switching boot priority (SSD not found), tried with disconnecting main SSD with Win10 on it to try and format/install Win10 on M.2 disk (SSD still not found).


Comparing one and two shows that motherboard and M.2 SSD are compatible, even their site suggests this SSD disk.

Any other suggestions?

 

[Absentis97]

Does your motherboard support M.2 NVMe? It may have an M.2 slot but it may only support M.2 SATA.

 

[Dalko]

It does say "Fast Onboard Storage with NVMe PCIe Gen3 x4 110mm M.2 (Up to 32 Gb/s), GIGABYTE M.2 solution offers considerably faster storage performance and support for both PCIe and SATA interfaces for M.2 SSD devices." on their main site.

 

[Absentis97]

Does the drive show up in "disk management" or device manager when connected by the M.2 interface?

 

[Dalko]

Unfortunately no, have checked that out too. Only disks that are listed are my main SATA SSD and USB stick.
M.2 SSD is not listed.

 

[popatim]

Which bios is yor motherbd running?

 

[Calvin7]

NVMe SSDs do not appear within the BIOS until Windows creates the system partition with the EFI Boot Sector.

(page 29 of manual)
Windows 8/10 Features: Allows you to select the operating system to be installed. (Default: Other OS)

CSM Support: Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
Enabled : Enables UEFI CSM. (Default)
Disabled: Disables UEFI CSM and supports UEFI BIOS boot process only.

This item is configurable only when Windows 8/10 Features is set to Windows 8/10 or Windows 8/10 WHQ

Installation guide for NVMe storage in this thread:

Can't boot from M.2 NVMe SSD

I had a Samsung 850 SSD (SATA) with Windows 10 on it. I bought Samsung 970 SSD (M.2). Turned off the computer, plugged it in, inserted a bootable USB stick with Windows 10 on it. Went directly to BIOS and changed boot priority to boot from the stick. Then, I installed Windows 10 on the new drive...

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