I have installed Windows 7 32-bit like a charm no problems, but I attempted to install Windows 7 64-bit and wiped my boot drive in the process. An error message keeps popping up saying "Windows cannot be installed to this disk, the selected disk has an mbr partition." So in order to install 64-bit I formatted the drive, but this didn't solve anything, the error is still there. Is there a BIOS setting that will let me install Windows 7 Professional 64-bit, as appaerntly there is, but i have no idea what it is?