Suddenly I can't open a folder I'm using windows XP
I can rename this folder & see its subfolders on explorer but when I try to open it ,the system frozen

Can you copy the contents of the folder to a different folder when using explorer?

Yes I can , but the copied folder has the same problem even if I'm trying to open it in a different computer
I can backup the folder & c it's complete contents from the backup wizard
But when I restore it I still can't open it & it froze the system