Many computer users do not know that when a file is deleted from a computer, it is not actually removed from the hard disk. You are no longer able to view the file in the folder but believe it or not, it still continues to exist with all its contents completely intact, at least at the point when you have deleted it. If you are using Windows and you have deleted a file, you can be sure that your file has been moved to the Recycle Bin. So the first step you need to take in order to be able to get back your deleted file is to look in the Recycle Bin. If you can find the file that you deleted in the Recycle Bin, you can certainly unremove the file and restore it without any problem.
However, if you have actually emptied your Recycle Bin or deleted the file directly from within an application used to work with the file, then the file will not be found in the Recycle Bin. Similarly, if you use Shift + Delete to get rid of the file then the file is permanently deleted without ever being moved into the Recycle Bin. Even in these cases, the file is still almost always recoverable. Regardless of whether you empty the Recycle Bin or whether you use a method to delete the file such that it bypasses the Recycle Bin, the file is still not really removed. All that happens is, as far as the operating system is concerned, the file does not exist and the space occupied by the file is treated as free space. Technically, new data can be rewritten on this space. However, since this does not happen right away, the data even in the deleted file continues to stay on the NTFS hard drive and you can carry out an unremove process to restore it.