Getting "System.ArgumentOutOfRangeException" when working with WMI in C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Management;




namespace CPUForm
{
    public class CPUPage : Form
    {
        public CPUPage()
        {
            InitializeComponent();
            timer1.Enabled = true;
            timer1.Interval = 1000;
           CPULOAD();
            CPUTemperature();
        }

      public void CPULOAD()
        {
            ulong CPULOAD;
            ManagementObject processor = new ManagementObject(
            "Win32_PerfFormattedData_PerfOS_Processor.Name='_Total'");
            processor.Get();
            CPULOAD = (ulong)processor.Properties["PercentProcessorTime"].Value;
            label2.Text = CPULOAD.ToString() + "%";

        } 
        public void CPUTemperature()
       {
           ulong CPUTemperature;
           ManagementObject temperature = new ManagementObject(
          "MSAcpi_ThermalZoneTemperature");
           temperature.Get();
           CPUTemperature = (ulong)temperature.Properties["CurrentTemperature"].Value;
           label3.Text = CPUTemperature.ToString();
       }
        private void timer1_Tick(object sender, EventArgs e)
        {

            CPULOAD();
            CPUTemperature();
        }
        private Label label1;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.label3 = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(25, 164);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(61, 13);
            this.label1.TabIndex = 0;
            this.label1.Text = "CPU LOAD";
            // 
            // label2
            // 
            this.label2.BackColor = System.Drawing.SystemColors.Window;
            this.label2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label2.ForeColor = System.Drawing.SystemColors.ActiveCaption;
            this.label2.Location = new System.Drawing.Point(28, 31);
            this.label2.Name = "label2";
            this.label2.Padding = new System.Windows.Forms.Padding(32, 6, 0, 0);
            this.label2.Size = new System.Drawing.Size(109, 121);
            this.label2.TabIndex = 2;
            this.label2.Text = "0%";
            // 
            // timer1
            // 
            this.timer1.Tick += new System.EventHandler(this.timer1_Tick_1);
            // 
            // label3
            // 
            this.label3.BackColor = System.Drawing.SystemColors.Window;
            this.label3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.label3.Font = new System.Drawing.Font("Microsoft Sans Serif", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label3.ForeColor = System.Drawing.SystemColors.ActiveCaption;
            this.label3.Location = new System.Drawing.Point(244, 31);
            this.label3.Name = "label3";
            this.label3.Padding = new System.Windows.Forms.Padding(32, 6, 0, 0);
            this.label3.Size = new System.Drawing.Size(201, 146);
            this.label3.TabIndex = 3;
            // 
            // CPUPage
            // 
            this.ClientSize = new System.Drawing.Size(624, 266);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "CPUPage";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        private Label label2;
        private Timer timer1;
        private IContainer components;
        private Label label3;

        private void timer1_Tick_1(object sender, EventArgs e)
        {
           CPULOAD();
            CPUTemperature();
        }
    }
}