diff --git a/Hardware/LPC/W836XX.cs b/Hardware/LPC/W836XX.cs
index 1f8be64..fb1abd7 100644
--- a/Hardware/LPC/W836XX.cs
+++ b/Hardware/LPC/W836XX.cs
@@ -67,8 +67,13 @@ namespace OpenHardwareMonitor.Hardware.LPC {
     private const byte VOLTAGE_BASE_REG = 0x20;
     private const byte BANK_SELECT_REGISTER = 0x4E;
     private const byte VENDOR_ID_REGISTER = 0x4F;
-    private const byte TEMPERATURE_BASE_REG = 0x50;
-    private const byte TEMPERATURE_SYS_REG = 0x27;    
+    private const byte TEMPERATURE_SOURCE_SELECT_REG = 0x49;
+
+    private string[] TEMPERATURE_NAME = 
+      new string[] {"CPU", "Auxiliary", "System"};
+    private byte[] TEMPERATURE_REG = new byte[] { 0x50, 0x50, 0x27 };
+    private byte[] TEMPERATURE_BANK = new byte[] { 1, 2, 0 };
+    private byte[] TEMPERATURE_SEL = new byte[] { 1, 2, 0 };
 
     private byte[] FAN_TACHO_REG = new byte[] { 0x28, 0x29, 0x2A, 0x3F, 0x53 };
     private byte[] FAN_TACHO_BANK = new byte[] { 0, 0, 0, 0, 5 };       
@@ -88,6 +93,17 @@ namespace OpenHardwareMonitor.Hardware.LPC {
         (ushort)(address + DATA_REGISTER_OFFSET));
     } 
 
+    private void WriteByte(byte bank, byte register, byte value) {
+      WinRing0.WriteIoPortByte(
+         (ushort)(address + ADDRESS_REGISTER_OFFSET), BANK_SELECT_REGISTER);
+      WinRing0.WriteIoPortByte(
+         (ushort)(address + DATA_REGISTER_OFFSET), bank);
+      WinRing0.WriteIoPortByte(
+         (ushort)(address + ADDRESS_REGISTER_OFFSET), register);
+      WinRing0.WriteIoPortByte(
+         (ushort)(address + DATA_REGISTER_OFFSET), value); 
+    }
+   
     public W836XX(Chip chip, byte revision, ushort address) 
       : base(chip)
     {
@@ -96,10 +112,29 @@ namespace OpenHardwareMonitor.Hardware.LPC {
 
       available = IsWinbondVendor();
 
-      temperatures = new Sensor[3];
-      temperatures[0] = new Sensor("CPU", 0, SensorType.Temperature, this);
-      temperatures[1] = new Sensor("Auxiliary", 1, SensorType.Temperature, this);
-      temperatures[2] = new Sensor("System", 2, SensorType.Temperature, this);
+      List<Sensor> list = new List<Sensor>();
+      switch (chip) {
+        case Chip.W83627DHG:
+          // do not add temperature sensor registers that read PECI agents
+          byte sel = ReadByte(0, TEMPERATURE_SOURCE_SELECT_REG);
+          if ((sel & 0x07) == 0)
+            list.Add(new Sensor(TEMPERATURE_NAME[0], 0,
+              SensorType.Temperature, this));
+          if ((sel & 0x70) == 0)
+            list.Add(new Sensor(TEMPERATURE_NAME[1], 1,
+              SensorType.Temperature, this));
+          list.Add(new Sensor(TEMPERATURE_NAME[2], 2,
+            SensorType.Temperature, this));
+          break;
+        default:
+          // no PECI support or extra sensor report register
+          for (int i = 0; i < TEMPERATURE_NAME.Length; i++) {
+            list.Add(new Sensor(TEMPERATURE_NAME[i], i,
+              SensorType.Temperature, this));
+          }
+          break;
+      }
+      temperatures = list.ToArray();
 
       switch (chip) {
         case Chip.W83627DHG:
@@ -145,6 +180,7 @@ namespace OpenHardwareMonitor.Hardware.LPC {
     }
 
     public void Update() {
+
       foreach (Sensor sensor in voltages) {
         if (sensor.Index < 7) {
           int value = ReadByte(0, (byte)(VOLTAGE_BASE_REG + sensor.Index));
@@ -157,7 +193,7 @@ namespace OpenHardwareMonitor.Hardware.LPC {
           // Battery voltage
           bool valid = (ReadByte(0, 0x5D) & 0x01) > 0;
           if (valid) {
-            sensor.Value = 
+            sensor.Value =
               0.008f * voltageGains[sensor.Index] * ReadByte(5, 0x51);
             ActivateSensor(sensor);
           } else
@@ -167,18 +203,32 @@ namespace OpenHardwareMonitor.Hardware.LPC {
 
       foreach (Sensor sensor in temperatures) {
         int value;
-        if (sensor.Index < 2) {
-          value = (sbyte)ReadByte((byte)(sensor.Index + 1), TEMPERATURE_BASE_REG);
-          value = (value << 1) | ReadByte((byte)(sensor.Index + 1),
-            (byte)(TEMPERATURE_BASE_REG + 1)) >> 7;
-        } else {
-          value = (sbyte)ReadByte(0, TEMPERATURE_SYS_REG) << 1;
+        switch (chip) {
+          case Chip.W83667HG:
+          case Chip.W83667HGB:
+            WriteByte(0, 0x7D, TEMPERATURE_SEL[sensor.Index]);
+            value = ((sbyte)ReadByte(0, 0x7E)) << 1;
+            break;
+          case Chip.W83627DHGP:
+            WriteByte(0, 0x7C, TEMPERATURE_SEL[sensor.Index]);
+            value = ((sbyte)ReadByte(0, 0x7D)) << 1;
+            break;
+          default:
+            value = ((sbyte)ReadByte(TEMPERATURE_BANK[sensor.Index],
+              TEMPERATURE_REG[sensor.Index])) << 1;
+            if (TEMPERATURE_BANK[sensor.Index] > 0) {
+              value |= ReadByte(TEMPERATURE_BANK[sensor.Index],
+                (byte)(TEMPERATURE_REG[sensor.Index] + 1)) >> 7;
+            }            
+            break;
         }
-        sensor.Value = value / 2.0f;
-        if (value < 0xFE)
+        float temperature = value / 2.0f;
+        if (temperature <= 125 && temperature >= -55) {
+          sensor.Value = temperature;
           ActivateSensor(sensor);
-        else
+        } else {
           DeactivateSensor(sensor);
+        }
       }
 
       long bits = 0;
@@ -212,7 +262,7 @@ namespace OpenHardwareMonitor.Hardware.LPC {
       r.AppendLine();
       r.AppendLine("      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
       r.AppendLine();
-      for (int i = 0; i < 0x7; i++) {
+      for (int i = 0; i <= 0x7; i++) {
         r.Append(" "); r.Append((i << 4).ToString("X2")); r.Append("  ");
         for (int j = 0; j <= 0xF; j++) {
           r.Append(" ");
diff --git a/Hardware/Nvidia/NvidiaGPU.cs b/Hardware/Nvidia/NvidiaGPU.cs
index 3b1c090..cf49f14 100644
--- a/Hardware/Nvidia/NvidiaGPU.cs
+++ b/Hardware/Nvidia/NvidiaGPU.cs
@@ -50,55 +50,43 @@ namespace OpenHardwareMonitor.Hardware.Nvidia {
     private Sensor[] temperatures;
     private Sensor fan = null;
 
-    private bool available;
-
     public NvidiaGPU(int adapterIndex, NvPhysicalGpuHandle handle) {
-      try {
-        string gpuName;
-        if (NVAPI.NvAPI_GPU_GetFullName(handle, out gpuName) == NvStatus.OK) {
-          this.name = "NVIDIA " + gpuName.Trim();
-        } else {
-          this.name = "NVIDIA";
-        }
-        this.icon = Utilities.EmbeddedResources.GetImage("nvidia.png");
-        this.adapterIndex = adapterIndex;
-        this.handle = handle;
-
-        NvGPUThermalSettings settings = GetThermalSettings();
-        temperatures = new Sensor[settings.Count];
-        for (int i = 0; i < temperatures.Length; i++) {
-          NvSensor sensor = settings.Sensor[i];
-          string name;
-          switch (sensor.Target) {
-            case NvThermalTarget.BOARD: name = "GPU Board"; break;
-            case NvThermalTarget.GPU: name = "GPU Core"; break;
-            case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
-            case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
-            case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
-            default: name = "GPU"; break;
-          }
-          temperatures[i] = new Sensor(name, i, sensor.DefaultMaxTemp, 
-            SensorType.Temperature, this);
-          ActivateSensor(temperatures[i]);
-        }
-        
-        int value;
-        if (NVAPI.NvAPI_GPU_GetTachReading != null &&
-          NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK) {
-          if (value > 0) {
-            fan = new Sensor("GPU", 0, SensorType.Fan, this);
-            ActivateSensor(fan);
-          }
-        }
-
-        available = temperatures.Length > 0 || fan != null;
-      } catch (Exception e) {
-        System.Windows.Forms.MessageBox.Show(e.Message + "\n" + e.StackTrace);
+      string gpuName;
+      if (NVAPI.NvAPI_GPU_GetFullName(handle, out gpuName) == NvStatus.OK) {
+        this.name = "NVIDIA " + gpuName.Trim();
+      } else {
+        this.name = "NVIDIA";
       }
-    }
+      this.icon = Utilities.EmbeddedResources.GetImage("nvidia.png");
+      this.adapterIndex = adapterIndex;
+      this.handle = handle;
 
-    public bool IsAvailable {
-      get { return available; }
+      NvGPUThermalSettings settings = GetThermalSettings();
+      temperatures = new Sensor[settings.Count];
+      for (int i = 0; i < temperatures.Length; i++) {
+        NvSensor sensor = settings.Sensor[i];
+        string name;
+        switch (sensor.Target) {
+          case NvThermalTarget.BOARD: name = "GPU Board"; break;
+          case NvThermalTarget.GPU: name = "GPU Core"; break;
+          case NvThermalTarget.MEMORY: name = "GPU Memory"; break;
+          case NvThermalTarget.POWER_SUPPLY: name = "GPU Power Supply"; break;
+          case NvThermalTarget.UNKNOWN: name = "GPU Unknown"; break;
+          default: name = "GPU"; break;
+        }
+        temperatures[i] = new Sensor(name, i, sensor.DefaultMaxTemp,
+          SensorType.Temperature, this);
+        ActivateSensor(temperatures[i]);
+      }
+
+      int value;
+      if (NVAPI.NvAPI_GPU_GetTachReading != null &&
+        NVAPI.NvAPI_GPU_GetTachReading(handle, out value) == NvStatus.OK) {
+        if (value > 0) {
+          fan = new Sensor("GPU", 0, SensorType.Fan, this);
+          ActivateSensor(fan);
+        }
+      }
     }
 
     public string Name {
diff --git a/Hardware/Nvidia/NvidiaGroup.cs b/Hardware/Nvidia/NvidiaGroup.cs
index eed24a9..60354f7 100644
--- a/Hardware/Nvidia/NvidiaGroup.cs
+++ b/Hardware/Nvidia/NvidiaGroup.cs
@@ -64,11 +64,8 @@ namespace OpenHardwareMonitor.Hardware.Nvidia {
       report.AppendLine(count.ToString());
       report.AppendLine();
 
-      for (int i = 0; i < count; i++) {
-        NvidiaGPU gpu = new NvidiaGPU(i, handles[i]);
-        if (gpu.IsAvailable)
-          hardware.Add(gpu);
-      }
+      for (int i = 0; i < count; i++) 
+        hardware.Add(new NvidiaGPU(i, handles[i]));
     }
 
     public IHardware[] Hardware {
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index c8f85a7..99d5220 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -69,5 +69,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.1.22.0")]
-[assembly: AssemblyFileVersion("0.1.22.0")]
+[assembly: AssemblyVersion("0.1.22.1")]
+[assembly: AssemblyFileVersion("0.1.22.1")]