Open the folder containing the hidden files.
Click the View tab
Uncheck Hidden items
See if the files now show up.
If not...
Click Start, type: cmd
Right click CMD
Click Run as administrator
Type CD followed by the drive letter
example: cd x:\
Hit Enter
X represents the name of the drive letter
Once you have navigated to where the folder is on the drive, type:
Type the following command to restore your files: attrib *.* -h -s /s /d then hit Enter on your keyboard.
This should restore any hidden files in the folder.