diff --git a/Hardware/Ring0.cs b/Hardware/Ring0.cs
index 482ca81..7a8663c 100644
--- a/Hardware/Ring0.cs
+++ b/Hardware/Ring0.cs
@@ -77,8 +77,15 @@ namespace OpenHardwareMonitor.Hardware {
       // try to get a file in the temporary folder
       try {
         return Path.GetTempFileName();        
-      } catch (IOException) { } 
-        catch (UnauthorizedAccessException) { }
+      } catch (IOException) { 
+          // some I/O exception
+        } 
+        catch (UnauthorizedAccessException) { 
+          // we do not have the right to create a file in the temp folder
+        }
+        catch (NotSupportedException) {
+          // invalid path format of the TMP system environment variable
+        }
 
       // if this failed, we try to create one in the application folder
       string fileName = Path.ChangeExtension(