Adjusting rotation on instatiated object clone

What do you mean by "I've tried to adjust the rotation"? What have you tried? Please post your code. Generally, it's sufficient to set the transform.eulerAngles immediately after instantiating, or directly passing the right Quaternion as a parameter to the Instantiate function.

 public void FireLaser()
     {
         if(currentBatteryPower>0)
         {
             //Debug.Log("What is the value?" + Battery.value);
             Debug.Log(maxBatteryPower);
             Rigidbody laserClone;
 
             laserClone  = Instantiate(laserBolt, cam.position, cam.rotation)as Rigidbody;
             
             // Set velocity to be the direction of the player camera (transform)
             laserClone.velocity = transform.TransformDirection(new Vector3(0,0,speed));
 
             // Turn off collisions with the player
             //laserBolt.GetComponent<Collider>(laserBolt.collider, transform.root.collider);
             soundSource.PlayOneShot(Laserbolt, 1f);
             currentBatteryPower-=powerCost;
             Battery.value=currentBatteryPower/maxBatteryPower;
 
         }