Error connecting to SQL Server with ADO

Question

I am trying to make a connection to a database in Sql Server, so it is giving this error

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Javascript Runtime error.

[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

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I’m a few days cracking my head to make this connection where I want to connect and make a simple select so that I’m not getting is that someone can give me a light from where I’m going wrong?

function TestConexao(){
  var aCon = ADO.CreateADOConnection();
  aCon.ConnectionString = "DSN=GROUP- 
  NOTEXX\SQL2014;Database=meuBanco;UID=usuario;PWD=senha;";
  aCon.LoginPrompt = false;
  aCon.Open();
  aCon.Execute_("Select * From ConfiguracoesIniciais")
  aCon.Close();
}