My hard drive has crashed. and I have lost it. its really difficult to get back. but yesterday I transfer my very important document by pen derive. how is it possible to recover my document from my pen derive. though I have not any document in my pen derive.
No matted what happens, you can firstly try a data recovery freeware to restore your data back for free. I believe it will help you a lot since it completely recovers the data of my friend from a mistakenly formatted hard drive.
To read more about it: http://blog4mark.blogspot.com/2012/12/deleted-files-rec...
In the future, you should back up your important data all the time.