Find the executable file path of the SQLSERVER service through the management tool - service, the local path is as follows:
C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe
Open the start menu - run, enter: CMD, enter the following command in the next console window to start the service:
C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe -g 1024
After successfully starting the SQLSERVER service, use the client to connect to the server and modify the maximum server memory setting to an appropriate size.
Instructions for the use of sqlservr.exe parameters:
http://technet.microsoft.com/zh-cn/library/ms162819(v=sql.110).aspx