Previous Versions if you're using Win7 or above
Previous versions are either copies of files and folders created by Windows Backup or copies of files and folders that Windows automatically saves as part of a restore point. You can use previous versions to restore files and folders that you accidentally modified or deleted, or that were damaged. Depending on the type of file or folder, you can open, save to a different location, or restore a previous version.
Right click the file or folder in question and select properties, Check the Previous Version Tab.
See if you can restore a previous version. Good Luck, hopefully this works.