That's normal for when it gets hot. Desktops can do it too. It usually is the CPU fan you hear doing that. It can indicate need for new temperature paste under the heatsink if the computer has had hard use or a couple years old.
Sometime my cpu fan just runs so hard for like 3-5 sec and then stops happens maybe 5 times a day? Is there something I can download to scan or something? I just want to make sure that it won't mess up my computer

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