Question : Error  SQl services

SQl server will not start because of this error:  I reenter the password for logon serives...
MSSQLServer services on local computer started and then stopped.
Some services stop automatically if they have no work to do. example performance logs and alert services

Answer : Error  SQl services

please locate the file ERRORLOG in the sql server installation folders, it will show the startup log.
post it here, if necessary