Question Pc won’t boot off of m2. Reboot and select proper boot device.

[Cartmeymey]

My setup includes the following:
I7-7700k
Z270 MSI pro gaming carbon
1080 MSI gaming +
16 gb ballistix sport ram
1 x Samsung 960 name m.2
1x crucial 250gb ssd

My pc was working perfectly, I then moved country and took all the component apart and rebuilt the pc into a new case in my new country. Everything seems to be working fine as the setup detects my gpu, cpu, ram and all of my fans but for some reason I keep getting the errors: “reboot and select proper boot device”
As you can imagine I have performed the basic tasks that could usually fix this issue. Such as booting with only my primary m.2 as well as removing cmos battery and resetting bios to defaults but nothing has worked. Can anyone give m any suggestion as to what my problem may be or how I could go about resolving it ?

 

[Latios]

it can be something so simple as to change the boot order, for me Windows 10 has usually 4 partitions and a certain one, a small one had to be set first in order to boot... could be that