Countdown problem

Hello, I have a little problem with my countdown script.

My game has a countdown that if it reach 0, this will freeze the game and you have to Press R to reload the scene, it works but after it reload the scene, the scene is still frozen, Can anyone help me please?

I know that Time.timeScale = 0; is causing the problem, It may be a little thing but Im noob scripting. Help me please.

var timer: float = 300; // set duration time in seconds in the Inspector
var isFinishedLevel : boolean = false; // while this is false, timer counts down
         
        function Update()
        {
        if (!isFinishedLevel) // has the level been completed
        {
        timer -= Time.deltaTime; // I need timer which from a particular time goes to zero
        }
         
        if (timer > 0)
        {
        
        guiText.text = timer.ToString("F0");
        
        }
        else
        {
        guiText.text = "Press R to restart"; // when it goes to the end-0,game ends (shows text: time over...)
        Time.timeScale = 0;
        if (Input.GetKeyDown("x")) // And then i can restart game: pressing restart.
        {
        
        Application.LoadLevel ("as"); // reload the same level
        
        }
        }
        }

Just reset the timeScale to 1 when you reset.

You could do this right before calling Application.LoadLevel, or in a Start or Awake function after the level loads.