When SQL Server 2008 was not logged in before, it was always changed by "Computer Management" → "SQL Server service", "SQL Server (MSSQLSERVER)." But now the problem has become the SQL Server service can not open the situation, is very depressing. As shown in figure:
Through the Internet, we know that because of the coexistence of SQL Server2008 and VS2012, when you installed these two things in the computer, SQL will appear in the picture above.
Workaround: Find "Microsoft SQL Server expres 2012LocalDB" from the control Panel or other assistive software to uninstall it. As shown in figure:
After uninstalling, refresh again, the SQL Server service comes out, the following figure, and then start the stopped SQL Server (MSSQLSERVER) by following the second red line in the following figure.
So far, a lot of people should be able to solve the problem, may be the reason for my RP, when I started SQL Server (MSSQLSERVER), there are new problems. The following figure:
By looking at the Windows log file (the method of viewing the log file) you can see that it is because the port is occupied, it is easy to solve this problem, just to turn off the back three of the SQLExpress service, to ensure that only one boot per boot is good. The problem has finally been solved.