Check BIOS settings first, make sure the storage controller you’ve got the SSD plugged into is enabled. Most will let you see if the drive is properly detected as well.
Could also be that the Windows installer does not contain the correct AHCI drivers for your platform; which chipset/SoC are you using? If this is the case, you’ll need to load the correct drivers manually during installation.
Check BIOS settings first, make sure the storage controller you’ve got the SSD plugged into is enabled. Most will let you see if the drive is properly detected as well.
Could also be that the Windows installer does not contain the correct AHCI drivers for your platform; which chipset/SoC are you using? If this is the case, you’ll need to load the correct drivers manually during installation.