Windows 7 Help Forums - View Single Post - How to get files back?
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16 Jul 2012  
mjf

Windows 7x64 Home Premium SP1
 
 

If the files were particularly important then IF the factory recovery didn't do a full format then you could try
Recuva - Undelete, Unerase, File and Disk Recovery - Free Download
You may need to use the full scan option.
Unlikely but probably worth a try.
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