When i try to reload my level with the function “Application.LoadLevel(Application.loadedLevel);” the game freezes 
The whole script:
static var health : float = 100;
var playerHealthMAX : float = 100.00;
var customGUISkin: GUISkin;
private var playerHealthBar : float;
var gameover : Texture;
private var horizontal : float = Screen.width;
private var vertical : float = Screen.height;
static var loadedLevelName : String;
function OnGUI ()
{
playerHealthBar = health / playerHealthMAX;
if (health > 0)
{
GUI.Box(Rect(10, 10, 200, 20),"");
GUI.skin = customGUISkin;
GUI.Box(Rect(10, 10, (200 * (health / playerHealthMAX)), 20),"");
GUI.skin = null;
}
if (health >= playerHealthMAX){
health = playerHealthMAX;
}
if(health <= 0){
Application.LoadLevel(Application.loadedLevel);
}
}
There is nothing wrong with your script it must be your computer or a other script. Is your computer not responding?
No,the level is loading but i cant move and nothing happen,its like a single picture.I can click things in Unity and all it’s only the game.And yes,i have also build it and try it then. 
Try disabling all the other script in the scene and make it reload. Tell me if it freezes then.
It’s freezing again :((((
Make a new scene with a plane and a box in it. attach this script to the box
yield WaitForSeconds (2);
Application.LoadLevel(Application.loadedLevel);
Tell me if it freezes again.
Ok, i got it work now,but i dont know why ? 
new script:
static var health : float = 100;
var playerHealthMAX : float = 100.00;
var customGUISkin: GUISkin;
private var playerHealthBar : float;
var gameover : Texture;
private var horizontal : float = Screen.width;
private var vertical : float = Screen.height;
static var loadedLevelName : String;
function OnGUI ()
{
playerHealthBar = health / playerHealthMAX;
if (health > 0)
{
GUI.Box(Rect(10, 10, 200, 20),"");
GUI.skin = customGUISkin;
GUI.Box(Rect(10, 10, (200 * (health / playerHealthMAX)), 20),"");
GUI.skin = null;
}
if (health >= playerHealthMAX){
health = playerHealthMAX;
}
if(health <= 0){
level = Application.loadedLevel;
Application.LoadLevel(level);
health += 100;
}
}
Awesome! For less strain in the game set the level var when the script starts.