Can you please provide the exact Error Message OR Screen Shot of the Error Message.
When user double click on D crive it showing message" D Drive is notaccessible , do you want to proceed with formatting" . Yes / No options.
While accessing D drive in A43 file management utility it showing "Parameters are incorrect".
if the user reinstalled their OS and activated EEPC again, the D: drive will still be encrypted with the old key.
So, simply find that and use WinTech/SafeTech to decrypt the drive.