how to check if heat sink is working fine

[kenram]

does a heat sink fan turns right away when turning the laptop on?

my heat sink fan only turns when i use my laptop long and playing games.. is this normal?

 

[leeb2013]

on some laptops, but not always.

 

[i7Baby]

Is it in your manual? Can you ask the manufacturer? You need to know the make and model.