If you accidentally close a document you are working on without saving it, or if a program crashes in the midst of your editing, the document may be gone for good. However, there are several things to try before giving the document up for lost. Computers offer several built-in backups for documents, any one of which can save a file from being permanently lost even if the file has seemingly been deleted from the system.

Step 1
If you lost the document due to the program unexpectedly closing down, launch the program that was used to create the original document. In the case of a program shutdown, the auto-recovery feature in the program likely backed the file up and the file should appear in the list of recovered documents in the window. Click on the file to open it. If it did not work, go to step 2.
Step 2
Open the computer's "Recycle Bin," where a deleted file remains until you empty the "Recycle Bin" and permanently delete the file. To open the "Recycle Bin," double click the icon on the desktop. If you find the file in the "Recycle Bin," right click the file icon, choose "Restore" and the file will return to the folder from which it was deleted. If If it did not work, go to step 3.
Step 3
Access the drive that stored the original document. Go to "Start" > "Computer" and double click the drive that contained the document.
Step 4
Search the drive for the document that you want to recover. To begin searching, type the name of the lost document into the search box in the upper right corner of the window and press "Enter." If the document you want to recover appears in the search results, right click the file and select the "Open File Location" to see where the file is now located.
Step 5
Check the computer's temporary files for the lost document if the file doesn't come up during a standard search. Remove the file name from the search box, enter "*.tmp" into the box and hit "Enter." If a temporary file with the document name appears in the list, right click the file, choose "Open" and, when the file opens in the application that created it, go to "File" > "Save As" and save a new, permanent copy of the document.  

If the above steps don't work, you should choose a recovery software to help you. OSpeedy Data Recovery is dedicated to be the best solution to your data recovery needs. Meet the requirements of both business and home users who need a data recovery program with high success rate. It is can offer uers safe and efficient recovery, which is also works without any damage to your data, not just for hard drives, but suits for USB sticks, external hard drives, mobile phones, digital cameras, iPod, MP3/MP4 players and more. Besides, it works for under any loss situation: deleted, formatted, or otherwise inaccessible files.