CAUSE
This behavior can occur if the the computer's CMOS settings for the hard disk are incorrect. For example, the disk may be set to Normal in the CMOS, when it should be set to Autoselect or LBA.
RESOLUTION
Select the correct CMOS setting for the drive before partitioning and formatting the drive and installing Windows NT. For information about setting your computer's CMOS settings, please refer to your computer's documentation or manufacturer.