To recover data from a corrupted MS SQL database, use a tool like SysInfo SQL Database Recovery. First, open the software and select the damaged database files. It will scan for issues, allowing you to choose between two recovery modes: Standard for minor corruption and Advanced for severe damage. After scanning, you can preview the recovered data and select what to restore. Finally, save the data to a new SQL Server database or export it as an SQL script. This process helps restore your database without losing important information.