Windows 10: How to boot from my old SDD on my new Motherboard

i just upgraded my cpu and mobo and when i try to start it it only brings me to the bios menu and i dont know how to start windows

:)

 

How to boot from my old SDD on my new Motherboard

Recently had my motherboard get fried. (Margarita Accident)

Purchased a new Motherboard and installed it. Got everything cleaned and working but now when I go to launch my BIOS says no bootable device found. A small amount of troubleshooting lead me to believe that this is because my old SDD and HDD were being used
on my old Motherboard. Is it possible to activate my license with this new motherboard?

Do I need to purchase a whole new Windows 10 Key?

 

Existing disks not recognised / booting of old SDD


My nice new SDD arrived, I installed it into the PC and disconnected the other SATA drives bar the DVD, spun up my W10 DVD and fairly quickly had a new activated install of W10.

Great!

So I plugged in the old SDD (it has the old C: on it) and the HDDs and it booted off the old SDD. *Sad

Unplugged the old SDD, plugged in the new one plus the HDDs, it wouldn't boot.

Went back to just the new SDD installed, boots fine, hot-plugged the HDDs and it wouldn't see them.

Argh! So right now I'm back where I was with the old SDD and the two HDDs which are mirrored.

 

Existing disks not recognised / booting of old SDD


The secret isn't in the BIOS, it's to do with the order the SATA disks are plugged into the Ports.

I now have:
DVD - port 0
new SDD - port 1
old SDD - port 2
HDDs - ports 4 & 5.

It's booting to the new SDD disk, I'm moving stuff from the old SDD disk to folders on the new, will then be able to reformat it and start installing programs. Will have to do the scary 'import foreign disks' thing for the HDD disks.