Due to CPU issues, sometime the eMMC is not recognized during the starting and the HMIBMI start in EFII mode
The FAQ is applicable for HMIBMI with a BIOS version lower than V115
To fix the booting issue, need to upgrade the BIOS, the latest version is V117
Here the procedure to upgrade the BIOS version
1/ Download the following file => V117
2/ Unzip and copy all files to the root of USB flash disk (the USB flash disk must be in FAT32)
3/ Insert the USB stick into the USB port and press "F7" during the boot to select the USB disk for boot, select UEFI: Build-in EFI Shell