Configurar o acesso ao BD Sql Server

Boa, nao estou conseguindo me conectar com o banco sql server , segue meu codigo de conexao. Grato!!

String Servidor = "LAPTOP-D381GI7F";
        String serverport = "1433";
        String dbName = "bdcontrole";
        String usuario = "admin";
        String password = "br010173";
        String serverip="192.168.0.8";
        Statement stmt = null;
        ResultSet result = null;
     String driver = com.microsoft.sqlserver.jdbc.SQLServerDriver";



    String url = "jdbc:sqlserver://"+Servidor+"\\SQLEXPRESS:"+serverport+";databaseName="+dbName+"";

        try {

            Class.forName(driver);
            Connection conn = DriverManager.getConnection(url, usuario, password);

            stmt = conn.createStatement();
            result = null;
            String numos,desc;
            result = stmt.executeQuery("select * from ordemservico");

            while (result.next()) {
                numos=result.getString("numos");
                desc = result.getString("descricao");              
                System.out.println(numos+"  "+desc);
            }

            conn.close();

        } catch (Exception e) {
            e.printStackTrace();
        }    


    }

vcs poderiam m ajuadar!!

grato