In my hard drive folder is not accessible and access is denied what can i do??th

[jaydev007]

in my hard drive one folder is not open when we try to open it show following mes "folder name(my folder name is jaydev) is not accessible and access is denied" this mes is shown and folder size is 300GB this data is very important for me so, what can i do??that I show my folder back.....plz help me......

 

[Saga Lout]

What is the actual name of the folder, including the whole path starting from C:\documents and settings\?