Use the HWMONITOR from CPU-Z software to monitor your PC.
https://www.cpuid.com/softwares/hwmonitor.html
This is the best and most reliable. HWINFO is not.
If the CPU temperatures are above 90 degree Celsium, you should open the heat sink and replace the heat paste. I used the Arctic MX4, which is economical. I have used it for years, servicing more than 10 CPUs already.
I noticed that my old PCs and Notebooks become slower after more than 5 years. I thought it was due to insufficient RAM as new programs get larger. When I started using the HWMONITOR software to monitor temperatures, I realised that CPU cannot have temperatures of more than 90 degrees C most of the time.
I used HWINFO earlier. It has lots of functions but the sensors readings sometimes cannot be displayed.
HWMONITOR only monitors the sensors but do not give data on the other computer components. You can use CPU-Z from the same developer, CPU-ID.
