If you lost your data because you can't find the partition containing your files in My Computer, you can try Free Any Data Recovery to recover inaccessible data from deleted, resized, corrupted or damaged partition. Plus, it can backup and restore partition table.
Follow the tutorials below to learn how to recover data from lost partition.
Select file types your lost files are.
Then select the drive which contains your lost partition. Click "Scan".
Then all the recoverable files are listed by path, type and time. You can preview photos and audios before recovery to check whether they are your need. And then select the files you would like to recover, and then click "Recover" to start recovery.
Filter: You can filter your lost files in the scanning result by searching the file name.
Select a path for the recovered files, Click "OK" to complete recovery.