Video showing how to reset the SQL Server SA administrator password.
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http://ral1.no-ip.org
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Stop the SQL service: net stop MSSQLSERVER
Restart SQL in single-user mode: net start MSSQLSERVER -m
Connect to SQL: sqlcmd -S localhost
Reset the SA password:
ALTER LOGIN sa WITH PASSWORD = 'NewPassword';
GO
Execute the Ctl + C combination
Stop the service and start it again in multi-user mode:
net stop MSSQLSERVER && net start MSSQLSERVER