Have you perhaps adjusted the Tj,max value in HWiNFO?
Right click on the Core value and select "Adjust Tj,max" to see the value currently used.
You can compare this value with the default Tj,max value set in CPU by checking in the main window under the CPU node. If you're running in Sensors-only mode, you will need to deactivate it in order for the main window to show up.