SQL Connecting Error

[DarkBerzerk]

some times i connect to the localhost via Windows Authentication and i loggin normally, sometimes i get this error and after i restart the problem solve, now even if i restart always the same error
Notice: in the SQL Server Manager, cant run the SQL Server (MSSQLSERVER) service :/ every time i get the 2nd error

[MentaL]

[Ismir93]

some times i connect to the localhost via Windows Authentication and i loggin normally, sometimes i get this error and after i restart the problem solve, now even if i restart always the same error
Notice: in the SQL Server Manager, cant run the SQL Server (MSSQLSERVER) service :/ every time i get the 2nd error

U didnt good install sql ;) so try again reinstall ..