Gigabyte H370 HD3 - No Bootable Devices Found

[thomaslovell97]

So I have just bought a i7 8700k and a Gigabyte H370 HD3 and transferred all other components from another pc.

I have Windows 10 installed on an SSD which booted fine in the old system but I am unable to boot from it on the new motherboard.

The SSD is showing up in SATA devices but the Boot Sequence just says No Bootable Devices found and I am unable to resolve this issue.

Edit: SSD boots fine in a 3rd, unrelated PC

 

[popatim]

You can try setting the CSM (Compatibility Support Module) or enabling Legacy mode and seeing if it will boot the old system's drive. UEFI by nature will not boot a foreign disk easily.