When I install my Samsung 990 Pro SSD into my M.2_2 slot It's recognised by my BIOS but when I go to "Computer Management" and initialise the disk then add a volume, it disappears and goes offline shortly after making it. When putting it into the M.2_1 slot It just isn't recognised at all by the BIOS.
Regardless, the SSD seems to be fully responsive, I can even change the LED from the Samsung Magician app, all tests on the disk seem to be up fine.
Here are the things I have tried:
Using the Samsung app to check the health of the drive (all tests say it's fine)
Updating all drivers and updating the BIOS
Returning the SSD and buying a new one (same issues)
Using "diskpart" to online the disk
Creating a simple GPT volume (deletes after a few moments)
What are the raid settings in the bios set to ? Have you used third party software to format and partition the drive? Windows sometimes does not see new drives installed, initialization seems to absent assigning a drive letter etc.
