Question CPU at 90° after only a few minutes from startup ?

Apr 5, 2022
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Hi,
Recently moved and had to disassemble/assemble the PC.
When I assembled it and turned it on - I noticed that the cooler was making loud noises, one of the fans were not spinning, so I checked the temperature of the cpu - and it was around 90 degrees.
I ordered a new cooler, assembled it, applied the thermal paste that came with the cooler - the cooler has rgb lights working, it is spinning, but the temperature is still 90°.
What's wrong again? I de-installed the cooler, turned it 180 degrees(in case if the water was blocked) and tried again - with another thermal paste - again 90°.
What the heck is going on with my computer? Why the cooling is not working?
 
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