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HP Elitebook 735 GS Fan goes full speed all the time

HP Recommended

I have a Elitebook 735 GS that suffers from a noisy fan I guess. 

Im running the latest Win 10 version, latest BIOS from november 2020 . The computer is clean. No dust what so ever. 

 

Even on idle with CPU usage of 2-3% and HW monitor showing less than 40 degrees, the fan suddenly spins up on max and it can cut, then go max again, and cut and then go max again....

 

Theres no "faulty" sounds from the fan, its just that its goes full speed when it doesnt seem to be needed at all. A pain in the a**  when trying to attend a VTC on Teams for instance. I have to mute my laptop all the time....

 

I'm clueless about this.

 

Any help or advise much appreciated!

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