Some users have complained that their Windows laptop fan keeps running constantly. Even if the laptop is idle, the laptop fan starts running continuously at full speed or high speed with loud noise.

As a computer endures use, its fans may begin to work overtime and produce a loud noise. This can be caused ... and increase airflow It's important to make sure that your computer's vents are ...

Also, pay attention to ensure that fan blades do not touch any wires, as this could cause friction noise. Secure all cables using ties. If your computer has started making noise recently ...

So what does it take to rev their fans? WSJ's Joanna Stern tries to turn up the heat with some punishing tests. Photo illustration: Preston Jessee for The Wall Street Journal Everything is now a ...