Error: 15372 Failed to generate a server instance of SQL Server due to a failure in starting the process for the user instance.

http://blog.sqlauthority.com/2009/06/08/sql-server-fix-error-15372-failed-to-generate-a-ser-instance-od-sql-server-due-to-a-failure-in-starting-the-process-for-the-user-instance-the-connection-will-be-closed/

Cancellare tutti i file nelle directory:

For XP:
Delete the directory “c:\Documents and Settings\username\Local Settings\Application Data\Microsoft\Microsoft SQL Server Data\SQLEXPRESS ”

For Vista:
Delete the directory “c:\Users\\AppData\Local\Microsoft\Microsoft Sql Server Data\SQLEXPRESS”