Can't install 9.0 on new machine

Howdy! About a month ago, I bought a new intel machine. The mainboard is the MSI MS-6729. My last board was an MSI MS-6590 Delta-LSR for the AMD processors. I have tried to reinstall 9.0 on the new machin w/o luck. If ACPI is turned on, it won't go to the initial read-out screeen. If ACPI=oldboot, it stops at the hardware detection section and the same for acpi=off. Any ideas as to what I can do to get it working??? Thanks!