Problem after installing M.2

[Sharrkan]

So i have b350-f Motherboard and decided to add an M.2 (970 EVO Plus) to my PC. I bought it. Pluged it in and now my OS will not launch. It goes straight to BIOS every time. What am i doing wrong.

 

[Sharrkan]

Ok so i think what is happening it stopped reading my SSD which i have my OS on.
I have an hdd, ssd and now m.2. And it only sees hdd and m.2.

Edit: when i unplug m.2 its all good. No idea what to do