Originally had 1 SATA ssd with windows 10 installed and 2 HDD for storage. Recently bought 2 1tb M.2 Drives to replace everything. I installed the drives and then proceeded to install windows. selected one of the M.2 drives and then was able to get into windows 10 just fine. Shut off pc then disconnected the original SSD and HDDs then attempted to boot back up and to no avail. I cannot get into windows 10. So I hooked my original SSD back up and now when I start my pc it asks which volume of windows I'd like to boot from. Am I able to fix this without reinstalling windows AGAIN. I've read some posts about disabling CSM and secure boot and so on. I've tried some of those with no luck.