Question Laptop CPU temp sensor gone haywire?

Oct 30, 2021
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Lately, I have noticed a very weird behavior while doing heavy tasks on my laptop: while monitoring temps on task manager, at first they seem to be around a reasonable 65-70 degrees C (which lines up with the factory settings of the laptop)

However, after a few seconds of this, the temperature immediately jumps up to 95-100 C with no warning and without the fan ramping up. This has caused me to send the laptop for repairs due to overheating but the underlying problem is not fixed. The issue persists even when the laptop is idle. Here is a temp graph to give you a better idea (taken from AMDuProf):

I have seen other questions like this and most of them indicate towards an uneven application of the thermal paste. However the heat problem was there even before i sent the laptop for repairs.

Any ideas? Thanks in advance.
 

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