Why is the cooler buzzing after several hours of laptop operation?

Question

laptops

Hello! Recently (yesterday for the first time) I encountered a problem: the cooler starts buzzing on the laptop after ~ 1-2 hours of operation. But if you turn it off and wait ~ 30 minutes (maybe less), and then turn it on again, then there will be no buzzing. But again, buzzing will appear after ~ 1-2 hours. What is the problem? In a cooler? If so, why does it not start buzzing from the very beginning of work?
I cleaned my laptop about 2 weeks ago. So I don't think dust is the problem. Thank you!

Answer 1

I think the cooler has just done its job.
Sometimes it happens that after some period of work (in your case, an hour or two), it shifts a little (simply because some part inside has worn off) and there is a hum.
The solution is banal - to change the cooler itself.

Answer 2

I'm afraid to seem banal .. but this is stupid overheating

Answer 3

see the turn-on temperature and the beginning of the buzz) and then everything will become clear

Answer 4

yes cooler. after several hours of operation due to the fact that the temperature rises and the system forces the cooler to spin at a higher speed. To begin with, if the cooler is collapsible, lubricate it, if not collapsible or cleaning did not help, then change