Most importantly, do you have a CPU cooling unit such a fan that is attach directly on top of the CPU. Secondly did you apply any thermal paste between the CPU and fan?
Most importantly, do you have a CPU cooling unit such a fan that is attach directly on top of the CPU. Secondly did you apply any thermal paste between the CPU and fan?
You might want to see if you can blow out the dust in the computer, particularly near/on the CPU heatsink.
Also check if the CPU fan is working.
Also, you didn't answer my other questions. Messing around the computer might have moved the heatsink, or unfastened it, or something. Maybe all you need is to remove it, replace the thermalpaste, and put it back.
What software/application are you using to obtain the temperature readings? Try using several others as the one you might be using is wrong. I use 'Core Temp' but others out there may know a better one.