New
#31
Do you have any idea how long it has been missing? The longer it has been since deletion, the greater the chance it cannot be recovered.
If it has simply been misplaced and you do remember the title of the file or folder, then I would download the free Everything search tool from voidtools.com and let it search your hard drive for that file or folder.
If it in fact has been deleted rather than misplaced, you have some chance of getting it with a tool such as Recuva or Getdataback. If the folder was in reality accidentally deleted a long time ago, then your chances of a successful recovery are small.
I'd start with the Everything tool from here:
Everything Search Engine