May have experienced something similar with a few others, which is important folders missing from the drive because as you use the Folder Lock program, then install a new program, and run normal wrote, When you reinstall on the computer you, who have been in the key folder does not show up.

Your folder is actually just hidden or concealed to prove and know its location, you can use MS-DOS. Next I looked for ways to protect open the folder in the folder are implanted, one of the most effective way in my opinion is to use MS-DOS, MS-DOS as a basic program of all computer systems that can be key to the operation of a computer system , a system that can be received by all computers, before the uninstall program windows or other OS, the first we see a MS-DOS (Commant Promt).

How do I get my files back?
Ways retrieve a deleted file Virus. There is a pattern of virus attacks, such as Viruses are created with Delphi that the size of the parent virus is large enough for the size of a virus, uniquely, the parent virus actually infects the files of the victim by hiding it in his body and will issue a hidden file when the victim is execute the file (eg winword.exe). When executed and removed from the parent body’s virus-infected file, where the virus inject with malicious scripts, and activate the script in the victim’s computer.

Often we can find such a pattern of attacks Virus Malware is a falsification of Data / File Original with Data / File False, where the Data / File the original of the victim deliberately hidden and replaced with an air-Executable File Icon Icon resemble the original data is hidden to fool the victim, usually also a folder that should type FILE/ folder (if the view in detail) in explore will turned into performing with type exe. for computer users who already understand that of course it will be followed up before running the file and spread to other computers.

While the technique of concealment by the virus file itself is done by Changing File Attribute on the data / files to be hidden, where the virus will provide a new Attribute File, namely: hidden and system plus a registry modification to replace the default / current Folder Options Settings (either when the Folder Options intentionally concealed or not by a virus).
to protect folders Virus and Usage

You can use the “attrib.exe” through the Windows DOS Mode:

(1) In Windows, Go to the DOS mode by clicking “Run”, then, type “cmd” (WinXP) or “command” (Win98), then click “OK”,

(2) Assuming the Drive Letter of location data that is hidden on your drive eg Drive D:, then in the DOS window type “D:” then press [ENTER], then Type: “attrib-r-h-s D: \ *. * / s / d “(without”), then press [ENTER].

After that, you try to check the data on drive D: Virus hidden data will be seen again. and if the file is lost because the program folder then go to protect as electronegative as Folder which can be opened or which have been transferred to another folder to folder usually Printers and Faxes (this is what I experienced) and the folder and file protect will appear and return to normal, please move / or copy data to another drive, if it can not simultaneously in the file means a lot, then copy  by bit, eg a folder, if a folder could not eat per file, the file is important that we can return