Cannot view contents of My Passport

I have a WD My Passport external hard disk and Windows 7. I have encountered a new problem recently in that the hard disk is recognized by the system (I have 57GB available out of 931GB) but I am unable to view any of the folders. Would appreciate any help/suggestions.

Hello, you can check if the folders are hidden. Click on the following link for more information.

http://windows.microsoft.com/en-us/windows7/show-hidden-files