无法从ASP重新启动windows服务.网络应用程序

我正在尝试使用以下代码从我的asp.net应用程序重新启动Windows时间服务，但它总是返回一个超时异常。我已经尝试了各种方法来删除此错误并重新启动服务，但不幸的是失败了。我为此目的使用的代码如下所示:

private ServiceController service = 
     new ServiceController( "W32Time", Environment.MachineName );
private TimeSpan timeout = TimeSpan.FromMilliseconds( 35000 );//15000 was the old value
// Restart W32Time Service
private void RestartService( )
{
    try
    {
        // Stop service if it is running
        if( service.Status == ServiceControllerStatus.Running )
        {
            service.Stop( );
            service.WaitForStatus( ServiceControllerStatus.Stopped, timeout );
        }
        // Start service if it is stopped
        if( service.Status == ServiceControllerStatus.Stopped )
        {
            if (!(service.Status.Equals(ServiceControllerStatus.Stopped) || 
                  service.Status.Equals(ServiceControllerStatus.StopPending)))
            {
                service.Stop();
            }
            service.Start( );
            service.WaitForStatus( ServiceControllerStatus.Running, timeout );
        }
    }
    catch( Exception ex )
    {
        log.Error( "Error in restarting windows service.", ex );
    }
}

我用的是Windows 7。谁能给我一个解决这个问题的办法?