Option 1:- Change SQL Server Password in Management Studio

Option 2:- Change SQL Server Password using SQL Script

Option 3:- Change SQL Server Password with software (No technical expertise required)

Since the first two options are already elaborated extensively I restrict myself for the option 3 only. A user with little or no technical knowledge of SQL Database can easily perform the resetting of SQL password without have to worry about data loss. The software is designed keeping simplicity in mind and therefore is a perfect companion for every System Administrator. Extensive knowledge and software description can be gained through the official website. http://www.mssqlserverrecovery.net/sql-password-recovery