Electronic – arduino – Stepper motor won’t turn, just vibrates

I'm using 2 x 1.8-Degree Nema 14, 35 BYGHW Stepper Motors with a DRV8825 Stepper Motor.

I have tried all 24 combinations of wiring the damn 4 wires but it won't work. I am using a 9v battery as the motor power source, which is fine.

It sometimes turns when I have 3 wires connected??

I can guarantee the wiring is correct, and this is the sketch.

Here is the code, which I am almost certain is correct too, I just started this project and I can't even get a damn motor to work!

/* stepper motor control code for DRV8825
 * 
*/

// define pin used
const int stepPin = 9;
const int dirPin = 8;

void setup() {
  // set the two pins as outputs
  pinMode(stepPin,OUTPUT);
  pinMode(dirPin,OUTPUT);

}

void loop() {
  digitalWrite(dirPin,HIGH); //Enables the motor to move in a perticular direction
  // for one full rotation required 200 pulses
  for(int x = 0; x < 200; x++){
    digitalWrite(stepPin,HIGH);
    delayMicroseconds(500);
    digitalWrite(stepPin,LOW);
    delayMicroseconds(500);
 }
 delay(1000); // delay for one second


  digitalWrite(dirPin,HIGH); //Enables the motor to move in a opposite direction
  // for three full rotation required 600 pulses
  for(int x = 0; x < 600; x++){
    digitalWrite(stepPin,HIGH);
    delayMicroseconds(500);
    digitalWrite(stepPin,LOW);
    delayMicroseconds(500);
  }
  delay(1000); // delay for one second
}