[SOLVED] SSD undetectable after sleep

[kdlsw]

I have a MSI B450M Mortar motherboard with WD sn750 500G black M.2 SSD, Win10. Every time I put the system to sleep, it cannot wake up normally, and shows an "unable to detect boot device" error, I check the bios, the SSD indeed is not showing in the list. I have to shutdown the computer and restart it in order to fix it, pressing the restart button will lead to another similar error.
I saw others with the same problem saying that if you put the SSD in the other M.2 slot (the one further from cpu), the problem will be gone, but SSD speed will be lower.
Please help, thank you!

 

[popatim]

This is usually a motherboard bios compatibility issue.
See if there is an updated bios for your board, if not then contact MSI and see if they have a beta one that addresses the issue.