Samsung 850 EVO M.2

Sep 5, 2018
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Hello I have an X370 Gaming Pro Carbon and it wont show up in BIOs, just in windows. I can use it as storage but I want to use it as my system and boot drive and my SSD as my storage(SSD is working fine) I converted it from MBR to GPT and eventually was able to install windows on it but my bios still wont recognize that's it's there and I cant boot from it naturally. I just get this blank black screen with a little flashing line at the top left corner. I've been searching the web for days and found people with similar problems with M.2s but still haven't solved my issue, please help.