If your laptop fan makes arhythmic whirring noise, it is simply spinning faster to counteract the high temperature of your CPU.
To reduce the noise,ensure smooth airflow,limit the CPU usage,and make sureyour laptop is not overheating. You may need toclean the fans and ventsas well.
However, if it is agrinding sound, it indicates faults in the fan hardware. See if lubricating the fan bearings after opening the laptop works. If not, it may require a replacement.
Maintain Proper Airflow
Unlike Desktop PCs, laptops have a limited number of vents to intake cool air and exhaust hot air.
Any obstruction to this air circulation prevents heat dissipation and causes the system to overheat, consequently raising the fan speed.
To maintain proper airflow,
Manage CPU/GPU Resource Usage
First,check the CPU temperatureusing any monitoring software. Ifthe temperature is high,lower the system temperatureto bring down the fan RPM. you may do so by closing the background processes.
Clean Laptop Fan
Accumulation of dust or dirt in the laptop fans or inside the vents impacts the fan’s cooling efficiency and heats up the CPU. To prevent the fan from spinning at max frequency due to such issues, it’s best to regularly clean the fans and vents.
If ithasn’t been a long timesince the last time you cleaned your laptop,
If it has been a longer time since youcleaned the laptop,a deep clean of the fanafter opening the laptop may be necessary. Check out ourHow to Clean a Laptop Fanguide for the detailed steps.
If your laptop fan ismaking a grinding noise, it indicates faults in the bearings inside the fan.
Look for ahole below the adhesive labelon the fan while cleaning it and apply a drop of machine oil to lubricate the bearings. If it still keeps producing the sound,it is failingand needs a replacement.
Check and Regulate Fan Speed
If your CPU temperature is not high, but the fan is making a loud spinning noise (not a grinding noise), you may be able to reduce the noise by lowering its speed.
Some laptops allow you tomanually control the fan speedfrom the BIOS and through OEM/third-party fan control software. Search for such optionson your BIOSor go through official sources to learn what to do.
However, most devices will have performance options to regulate fan speed. For example, my Lenovo laptop has three options—Quiet Mode,Balanced, andPerformance. In such cases, specify a lower performance setting.
Some laptops also have single fan boosting options to increase the fan speed instead of the above settings. If you are not running any resource-intensive tasks, disable these options to quieten your laptop.
