For about 2 weeks now I have been hearing a strange rhythmic hum for a few minutes on my Samsung laptop instead of the normal noise of the fan.
Meanwhile it is warmer and I do not feel any warm air escaping from the side.
I have the impression that in these moments the fan motor turns freely without being able to turn the fan propeller.
How can I ensure that it has a better grip on the propeller again?
The fans do not have a "usual" propeller that sits on a shaft. The "propeller" is part of the rotor. The fan setting may be "wrong". You do not regulate from 0% to 100%, but e.g. From 10% to 100%.
Something seems to be spinning fast without being able to transport air.
Either take a look or bring it in for repairs.
In the next few days I'll have a friend of my family who is a PC specialist checked it out and once had his own PC service shop.