Windows could not start the SQL Server (MSSQLSERVER) service on Local Computer.Error 1069: The service did not start due to a logon failure.

I was getting the same error since I had changed the password of my computer. I have changed in the services after that it is working fine.

Go to Run-->services.msc--> SQl Server(MSSQLSERVER) . Right click --> Properties -->  Click on "Log on" tab. I have changes the password and retype the current windows password again. It works.