@Zonie8541
In your Task Manager, under the Processes tab, if you click the CPU column header it will stack the running processes in order of usage levels. If there is a process (or processes) that is using large chunks of your CPU capacity, it or they should be at the top of the list. Can you tell us what you see there?
Edit: Just to be clear, identifying processor hogs is a good thing to do and will help out in a general sense with your PC health, but is not necessarily going identify or fix the cause of your temperature issue. If it's not the problem, eliminating it as a possibility will help narrow the field.