I updated my BIOS and still nothing changed. The NVMe drive is now registered as a bootable option ( not as a part of Windows Boot Manager ), but it still remains unbootable and the BIOS still cannot detect a drive in the m.2 slot. I change the settings and turn CSM back on. I also notice that the BIOS registers the m.2 slot as empty. However, not only was that not the case but the NVMe drive doesn't show up as a bootable drive at all. I do this and what should happen is the NVMe Drive appears in the boot order as part of Windows Boot Manager. The solution was that there needed to be no other drives connected to the motherboard, the setup needs to complete due to the EFI Boot Sector not being created, so it said to disable safe boot and turn off CSM and then to reboot the PC. I do research online and come accross a forum thread which seems to have the same issue. Whenever I try and boot from it directly by overiding the boot queue, it gives an error saying cannot find OS or this found nothing to boot from. I install windows fine but when I try and boot from SSD ( which at this point does show up as an option to boot from ) it skips bypasses it and goes straight to the USB and opens with the interface for installing Windows 10. Skip to a year later I decide to download a fresh install of windows onto the NVMe SSD as I feel I'll get more bang for the buck this way. ssd bios In some cases the BIOS will display the drive model number while in other cases it will only indicate the existence of a drive and its capacity. Anyway, due to issues with sector sizes I wasn't able to clone the drive so I just used it to store games. I've reinstalled it many times but it still didnt work. Sometimes it does open but it cannot detect the drive. I install it but when I open it, it crashes instantly. My first red flag came when installing the Western Digital SSD Dashboard program. SOLUTION - Drive is not detected by the BIOS: There are few reasons for not detecting a drive in the BIOS: 1. In some cases the BIOS will display the drive model number while in other cases it will only indicate the existence of a drive and its capacity. Dell ships laptops with SSDs from the factory, and has been doing so for years. In laptops where the drive plugs in under a hatch in the underside of the laptop, this might not make any difference. I am able to store files and programs on it, all seems well. In most cases the SSD will be automatically detected by the BIOS. The result is an SSD that doesn’t detect in the BIOS or the operating system, or perhaps even worse, a drive that works intermittently.

I install the drive and partition it in windows and everything is okay. My aim was to clone my OS from an older hard drive and use that hard drive to store games.

Restart your computer and enter BIOS again to see if the SanDisk SSD is detected now. Check if the SATA port to which the SanDisk SSD is connected is turned OFF in System Setup. A year ago I installed a WD BLACK 250GB NVMe SSD. Fix 2: check BIOS settings Restart your computer and press the F2 key or any key according to your PC to enter BIOS interface.

Sandisk ssd not detected in bios