Losing all your files is certainly the last thing any computer user would want, but what if that does indeed happen? Don't worry yet, but be careful not to overwrite the affected files as they may still be on your hard drive.
This phenomena is credited to the way your computer stores files. Once a file is deleted or a drive is formatted, your files aren't lost, they are simply 'ignored' by the drive and may be still recoverable given that you did not overwrite them (e.g. by installing a new OS or reformatting the drive multiple times).
OK, so to recover your files, all you need is to be able to log in to your Windows system and install Recuva.
Recuva is the best free file recovering software, and can recover virtually any lost file. Simply open the program and follow the on-screen instructions.
It may take from 10 minutes to several hours recover your files depending on the type of scan you choose and the number of files you recover. It is recommended to start a Quick Scan first, and then a deep scan if you don't see your files listed in the quick scan results.