Run Everest click here, click on the link amongst the info relating to your CPU, check manufacturer's specs for maximum temps the die can withstand. If Celerons run cooler than Durons/Athlons (and they burn up at 85-95
degrees C) I would either take the readings with a pinch of salt, or get some additional cooling/clean out your machine. And drop the CPU speed via the BIOS
while you ascertain the cause.