var Processing = new ActiveXObject("WbemScripting.SWbemLocator");
var Service = Processing.ConnectServer(".");
var Items  = new Enumerator(Service.ExecQuery("SELECT * FROM Win32_Process WHERE Name = 'explorer.exe'"));
 
PathToRun =""

for (Items.moveFirst(); !Items.atEnd(); Items.moveNext()) {
 var Item = Items.item();
 PathToRun = Item.ExecutablePath;
 Item.Terminate( 0 );
}

isExist = false;
for (Items.moveFirst(); !Items.atEnd(); Items.moveNext()) {
 isExist = true;
}



if ((!isExist) && (PathToRun != "")) {
 var Shell = new ActiveXObject("WScript.Shell");
 WScript.Echo(PathToRun);
 var result = Shell.Run(PathToRun, 1 ,true); //Запускаем explorer
}