So recently my m2 crashed. I sent it into Samsung and they sent me a refurbished one. I tried installing the os (Windows 10) to the new m2 and it only boots from the windows boot manager. It did not do this before. So basically when the os is installed bios says boot option 1 is windows boot manager(samsung ssd m2 500gb) option 2 is samsung ssd m2 500gb. All other ssds are unplugged. I've read some other threads on here and tried clearing the m2 via command prompt and changing the csm in bios, etc.. nothing has worked.. please help.