You can recover all kinds of data such as files, folders, photos, videos, audio files, etc. using Stellar Data Recovery Professional. It supports recovery for all data loss case scenarios, such as deletion, formatting, corruption, virus attack, etc. However, if you are not able to recover your files, it could be due to the following reasons:
Files are not found in Quick Scan
Run ‘Deep Scan’
The software runs the ‘Quick Scan’ by default. If you are not able to find your files after this scan, run ‘Deep Scan.’ The ‘Deep Scan’ scans the entire drive sector by sector and retrieves all deleted or missing files. Hopefully, this will do the work!
The file type you wish to recover is not in the default file types list.
Use the ‘Add file’ feature
The software comes with a vast file-type library. If you want to recover some specific file, which is not in the default file-type list, you may perform custom file recovery:
a. Run Stellar Data Recovery Professional on your PC.
b. In hamburger menu on top left click Advanced Settings 
> Add File Type
c. Select ‘I don’t know how to add file type.’
d. Click Add to browse and add at least ten or more samples files of the same file type, originated from the same source.
e. Type the header file name and choose the header file type from the Select Group drop-down list.
f. Choose the file size from Put Average File Size text box and click Add File Type.
g. After adding file type, you may scan the drive and recover it.
You can also add the file manually by selecting ‘I know how to add file type’ and proceed with the on-screen instructions.
The deleted files have been overwritten
*If new data overwrites the deleted or lost files, they cannot be recovered even with the software.
Overwriting occurs when you keep using or adding more data to the drive from which you lost data in the first place.
Hence, we always suggest you stop using the drive and adding new data to it after data loss to avoid overwriting. It even increases the chances of recovering data by up to 100%.
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