This Micron SSD Drive keeps disappearing from the drive list in UEFI on some reboots.

I have made shure the drive has the latest firmware (070H).
The drive is connected to the SAT3_01 connector which is the suggested boot choice in the manual.

I have to reset the PC for the the drive to show up again.

This generally happens when I shut down the PC and then restart it.

Any Ideas?