2nd M.2 SSD --> boot freezes (=RAID can't be disabled ?)

Hello all,

I have recently bought a R7-372T, with Windows 10 with an UEFI partition on a M.2 SSD (Liteon).

As there is another M.2 slot, I wanted to add anotyher SSD on it (Samsung 850 EVO) in order to install a linux distro but when I plug it in, the boot freezes just after displaying the Acer logo during 0.1 second (then black screen).

I tried to swap the SSD from his slot to the other, tried all the possibilities (with or without each SSD), my conclusion is that the boot freezes when the Samsung SSD is plugged.

I wonder if there is a link with the locked BIOS from Acer (can't change RAID mode to AHCI for example).

I also can't disable Secure boot (could be useful for installing Linux distros).

Can someone help me, please ?

Thank you very much ! Image may be NSFW.
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