Hi, I am trying to install Windows 8 on a SuperWorkstation 7047A-T that uses a X9DAi motherboard.
During the Windows 8 install the system crashes with a ACPI_BIOS_ERROR BSOD.
The system runs ok with Windows 7 and Windows Server 2008 R2.
Well I would assume that the default ACPI drivers provided in windows 8 are conflicting with your motherboard. If you try an upgrade install from 7 it should keep your existing drivers which may work... otherwise all I can recommend is waiting for Windows 8 to actually be released and maybe those kinda bugs with finally be worked out.