BTX Halted error

I've read a lot about the "BTX halted" issue in the archives and have
found many related topics pointing to the same fix: I need to change
the ATA devices to use simple DMA or PIO instead of Ultra DMA.
Unfortunately, I'm unable to find anything related to "DMA" in my
bios. The BIOS is Phoenix - AwardBIOS

Any help would be greatly appreciated,
Nathan N.