Should you migrate to Windows 10 or continue using what you've got? Unfortunately, there is no universally correct answer to this question. Nowadays, many people are still better off sticking with Windows 7 or Windows 8, but more people choose to upgrade to Windows 10. As we all know, the upgrade process will change data on your disk, so you are at high risk of loss of data.
Losing precious files after upgrading from Windows 7/8/8.1 to Windows 10 can be distressing. You may feel unsure of what to do next. The good news is that you don't need to panic—professional data recovery software can help. Hasleo Data Recovery is specifically designed to recover lost files on Windows systems. Its advanced scanning engine efficiently locates and restores deleted or lost data, giving you peace of mind.
Download, install, and run Hasleo Data Recovery. On the main interface, select Deleted File Recovery mode.

Select the partition where you lost your files, then let the software scan it for recoverable data.

The software will display a list of found files. You can preview them by path or by type. Select the files you want to recover, then click the "Recover" button to save them.

Important Notes:
As professional data recovery software, Hasleo Data Recovery makes it easy to recover lost files after upgrading to Windows 10 from Windows 7, 8, or 8.1.