Most causes of the Laptop fan running constantly can be traced down to high CPU utilization caused by Windows updates or other applications. When CPU utilization runs high the CPU gets warm and the fan will run to control the thermal temperature of the CPU.

Note: It is normal for the fan to produce noise if users are using the machine at over 30 degree temperatures. The fan speed is controlled by the temperature control system, which can adjust the fan speed according to host heat volume.

Try the following methods:

1. Method 1: Check CPU usage.
2. Method 2: Clean air vents.
3. Method 3: Close Applications.
4. Method 4: BIOS update and power manager (if BIOS/EC thermal control logic has issues)

Find the section “Smart Fan“/”Fan Settings” select it. The fan settings will generally be located under “CPU“, “Hardware Monitor” or “Advanced“. Find one of these and press “Enter” to find the fan settings to change its setting into “disabled”.

Laptop fans expel air and make a soft to moderate audible sound under normal use. If your laptop’s fan is silent, the air near the vents is calm and the laptop is very hot, it’s likely that the fan is not working.

Like desktops, laptops can suck up a ton of dust. And because everything in a laptop is packed together so tightly, dust is even more dangerous. When the cooling fan has to run constantly, it’s just a matter of time before the machine starts overheating, locking up, and possibly even kicking the bucket.

Press the directional arrows on your keyboard to select “System Monitor.” Press “Enter.” Select “Fan Control” and then select “CPU Fan Speed Control.”

Dust is the most common cause of laptop noises. Dust damages your system in various ways including obstructing your laptops fan, which causes it to make loud noises. To clean it; you need to open up your laptop using a screwdriver and use a blower to remove all dust particles. This should be done yearly.

If your laptop has a noisy fan you can fix it with these six simple steps:

1. Kill processes to keep the fan quiet.
2. Mac users: reset SMC and PRAM.
3. Keep your laptop cool.
4. Clean your laptop.
5. Use software to control your laptop fan speed.
6. Replace your laptop fan.
7. Get an expert to check the noisy laptop fan.

The main task a laptop fan is expected to perform is to blow out hot air so that the internals remain cooler. You can check if this happens by letting your laptop reach its optimum temperature and then check if it blows out hot air. A Lenovo Laptop should always be placed on a straight and hard surface.

If you notice the computer fan running constantly and making an abnormal or loud noise, this might indicate that the computer is not running as efficiently as possible, and/or clogged air vents. It is important to keep dust from accumulating in your computer and ensure adequate ventilation to help reduce heat.