The error message can also occur if a busmaster driver is active. This problem often occurs in computers with VIA or ETEQ chipsets.
You have the following possibilities to choose from:
Download the newest drivers for your chipset and install them, (For mainboards with an ETEQ chipset: Update the ETEQ BusMaster PCI IDE driver to at least version 4.1.2). It is also advisable to flash the BIOS of the computer to the newest version. If this doesn't solve the problem:
Please deactivate the option UltraDMA. In particular if a harddisk is connected to the same port as a CD-ROM drive.