BasicPositionReset.cs

using UnityEngine;

public class BasicPositionReset : MonoBehaviour{

    public UnityEngine.Vector3 startPos ; 
    public UnityEngine.Quaternion startRotation ; 

    void Awake(){
        startPos = transform.position ; 
        startRotation = transform.rotation; 
    }
     void Update() {
            if (Input.GetKeyDown(KeyCode.Keypad0) ) 
            {
                Reset(); 

            } 
    }

    void Reset(){

        transform.position = startPos ; 
        transform.rotation = startRotation; 
    }

}