Windows Setup's F6 diskettes need to have a file named TXTSETUP.OEM in the root level of the diskette, which is a script that gives Setup the driver information and maps the files needed in any subdirectories. If they didn't set it up correctly, or if there's a bad sector on the disk (neither of which I'd put past MSI), it won't work.
Best suggestion here: download
http://www.msi.com.tw/program/suppor...IDE_Driver.exe, copy everything in the drivers\SATA\ folder to a freshly formatted diskette, and try once more.