Why Does My Computer Fan Keep Running?

The majority of the time, computer fans will regulate themselves, but if they are always running at high speeds, even while your computer is off, you may need to diagnose the issue or change your settings to ensure that your computer is operating properly. A buggy process using up your CPU or leftover charges on your hardware may also be the cause of high temperatures, which can make your fans run more quickly to compensate.

Computer Running Hot

Your computer may be overheating if its fans are always running, even when it is idle or performing simple activities. This can occasionally be brought on by dust clogging the case vents on your computer, which prevents airflow and traps hot air inside. Periodically clean the vents with a can of compressed air to ensure that cold air can enter and heated air can exit. To assist you access more of the dust, if it’s possible, remove the side panel from your computer tower. Ascertain that the space where your computer is located is cool and that none of its sides are blocked from receiving cool air.


While increasing the speed of your computer can give it more power, it will also cause it to become hotter. If your computer is running too hot all the time, it could be damaged. Reset the hardware’s settings to default to undo the overclocking process if it makes your machine overheat. For instance, if you overclocked your CPU, you can frequently reset it by accessing the BIOS of your computer and returning it to its default settings.

Heavy Processor Use

Your computer will produce more heat the more processing power it consumes. Your computer will get hotter and its fans will run quicker to make up for it if you are doing processor-intensive tasks like playing video games with high graphics settings or running several apps simultaneously. Open Task Manager to see what processes are running if you have few programmes open but your fans are still running hot. It’s possible that a buggy task is using a significant amount of your CPU. Terminate any operating processes that you no longer desire, but take care not to terminate any crucial system processes.

Residual Circuit Board Charge

A residual charge that was left on your motherboard could be the root of the problem if your fans continue to run long after you have turned off your computer. You must perform a cold boot in order to troubleshoot this. Completely shut down your computer before unplugging the tower of everything, including the power wire. Remove the battery and unplug the power cord from your laptop if you’re using one. After 30 seconds of pressing and holding the power button, reconnect everything and restart your computer as usual.

Fan Settings

Your BIOS’s settings allow you to manage a lot of your fans. Depending on the model of your computer, what you see when you open your BIOS could require some searching. All of your fans won’t be under your control; case fans, for instance, always operate at the same pace. Although precise speeds might not be editable, you can reduce the minimum and maximum fan speeds. If your fans frequently run too fast, lowering your minimum speeds might be helpful since they might not be configured to go any lower.


How to Set a Laptop Fan to Run All the Time

Laptops experience overheating issues more frequently than desktop computers do.

Compared to desktop computers, laptops are more likely to have overheating issues. This is so that air may circulate more easily. A laptop’s components are packed closely together. By changing the fan settings on your computer so that it runs more often or even constantly, you can prevent your laptop from being overheated. Changing your fan settings can cool your laptop but will make it noisier because the default fan settings are frequently chosen to make the laptop quieter.

Step 1

Restart your laptop by selecting “Restart” from the Start menu after hitting the “Start” button.

Step 2

To access the BIOS (Basic Input/Output System) interface while the computer is restarting, press the “F10” key on your keyboard.

Step 3

Find the location of the “Fan Settings” section. Use the arrow keys on your keyboard to switch the highlighted choice, then hit “Enter” to select it. Your computer will have a different location for the fan settings, but it will be either under “CPU,” “Advanced,” or “Overclocking.” To look for the fan settings, choose one of these and click the “Enter” key. Press “Enter” after choosing the “Go Back” option to return to the previous screen.

Step 4

To view the fan settings, choose “Fan Settings” and hit “Enter.” This displays both the high and low fan temperatures as well as the high and low fan voltage.

Step 5

To get the fan to start running sooner, reduce the temperature on “fan low temp.” Your laptop will always be hotter than this if you set this to a low enough temperature, causing the fan to run continuously. Your laptop will determine the precise temperature required for this to happen. In almost all circumstances, 30 degrees will be low enough.

Step 6

To make the fan start running at a higher voltage and consequently faster, change the “fan low voltage” option to a higher voltage. Don’t set the “fan high voltage” higher than the fan’s maximum voltage setting because doing so could result in the fan breaking.

Step 7

In order to return to the main BIOS page, select “Save Settings and Exit” and then hit “Enter.”

Step 8

In order to exit the BIOS menu and force your laptop to restart, select “Exit” and hit “Enter.” The changed settings will now apply to your fan’s operation.

How to Set the CPU Fan to Run All the Time on an Acer Extensa

Your cooling fan can be set to run continuously.

The central processing unit in your Acer Extensa is cooled by a fan to prevent overheating and damage. With “Smart Fan Control,” which automatically modifies the fan speed based on the CPU’s temperature, the fan speed is set. This indicates that your fan isn’t on constantly. The computer may be quieter as a result, but it may also become hotter. From the basic input/output system menu, you can disable this setting to have your fan run continuously.

Step 1

Your Acer Aspire laptop should start or restart.

Step 2

While your computer is booting up, keep holding down the “F10” key to load the BIOS menu. You can navigate here using the arrow keys, and pressing “Enter” will select the option that is highlighted.

Step 3

The “Fan Settings” choices page should be found. In most cases, the “Hardware Monitor” or “H/W Monitor” option will have the fan settings. But with the Aspire series, things might be different.

Step 4

Use the arrow keys to toggle the “Smart Fan” option to “disabled.” Your fan will therefore operate continuously at maximum speed as a result. Reduce the voltage using the “CPU Fan Voltage” setting if you wish to reduce the speed.

Step 5

You will be sent back to the BIOS menu after selecting “Save Settings and Exit.”

Step 6

Choose “Exit.” Your laptop will restart, and your fan will then run continuously going forward.

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