Wdc wd75 01aals-75j7b0

Hello and welcome, 

Sorry to hear that you cannot access your files. Have you tried running a test with DLG? You can also try using a data recovery program to scan the hard drive, with the help of Google you should be able to find several options. Check the links below for more help. 

How to test a drive for problems using Data Lifeguard Diagnostics for Windows 

http://community.wd.com/t5/WD-Portable-Drives/MyBook-Files-Deleted-Can-I-Get-Them-Back/m-p/370881/highlight/true#M9715