3 possible causes according to Microsoft ,did you try any of these fixes .
• Your computer uses an Ultra Direct Memory Access (UDMA) hard disk controller, and the following conditions are true:
• You use a standard 40-wire connector cable to connect the UDMA drive to the controller instead of the required 80-wire, 40-pin cable.
• The basic input/output system (BIOS) settings are configured to force the faster UDMA modes.
• The file system is damaged and cannot be mounted.
Fixes .
• Replace the 40-wire cable with an 80-wire UDMA cable.
• In the BIOS settings for your computer, load the 'Fail-Safe' default settings, and then reactivate the most frequently used options such as USB Support.