What makes laptop fans spin faster

What to do if the laptop ventilation gets noisy Causes & Solutions

The laptop cooling protects the computer from overheating. Users should listen all the more closely if the notebook suddenly makes strange noises. Loud rattling or hissing often indicates serious problems.

Loud laptop ventilation is the equivalent of breaking a sweat in humans: It means that the computer has to work very hard at the moment to provide the required performance and cope with all tasks. To protect the hardware from overheating, more fresh air is needed and the integrated mini fan rotates faster. Sometimes it can get really loud.

There is not always cause for concern. But if the ventilation starts up or rattles loudly for no reason, it is worth taking a look under the hood. Here you can find out the causes and solutions for loud laptop ventilation.

That's why ventilation is so important

Because all the components in the notebook are close together, the heat builds up in the housing much faster than in a desktop PC. Well-functioning ventilation is all the more important. It protects the hardware from permanent damage and prevents the system from crashing due to overheating.

Users should make sure that the heat can escape easily. For example, it is not a good idea to place the notebook on a cushion that blocks the ventilation slots for long periods of time. Dust and dirt can also accumulate in the components over time and impede air circulation.

Clean components and keep them in good condition

With older notebooks in particular, it is worth unscrewing the case and carefully removing dust from the inside. This works best with compressed air. You can find the accessories in a computer or photography store.

Signs of wear and tear can also appear over time. The fan is basically a mini fan, i.e. a mechanical component that wears out. If the ball bearing is no longer seated or parts come loose, this leads to a loud rattle. But that can be easily remedied - for example with a spare part.

When the problem is deeper

It becomes more difficult if the cause cannot be identified at first glance. Problems at the software or operating system level can also lead to excessive loads on the processor - and with it the ventilation too.

This is immediately noticeable when playing with high-resolution graphics or working with computationally intensive software: the computer runs at full speed, becomes audibly louder or even warms up. That alone is not a cause for concern - most notebooks have mechanisms that sound the alarm in good time or save resources in an emergency.

But when the loud ventilation becomes a permanent phenomenon and the computer starts to gasp with simple tasks or for no apparent reason, you have to take a closer look. An unwanted program may be running in the background.

Tip: With the Windows Task Manager you can usually quickly find out about the performance hogs. In addition, a virus scan to find hidden malware and a quick check with the help of Windows performance monitoring are worthwhile.

This makes the fan quieter again

Users can also regulate the fan indirectly through the notebook settings and prevent it from becoming loud. Some models have a so-called "silent mode". This prevents the fan from running at full speed. However, the system performance is also throttled at the same time. Silent mode can usually be switched on and off using a special key on the laptop keyboard.

The energy-saving mode in the Windows settings has a similar effect. This can be found in the control panel in the "Energy options" submenu. You have to accept that the computer may work a little slower. In return, the hardware is spared - and also the environment.

Experienced users can also regulate the fan speed at the BIOS level. However, this also restricts the cooling capacity and increases the risk of overheating. You should be able to assess how much you can expect from your own computer.

The notebook stays cool with these tips

Notebooks with an SSD hard drive have a clear advantage here: This type of hard drive develops less heat during operation, so the devices usually run more quietly than devices with an HDD.

Regardless of the equipment, the following applies: if your notebook gets noticeably loud or warm, give it a short break. Closing all programs, shutting down the computer and waiting briefly before restarting can work wonders.

When working, it is best to close all programs that you are not actively using. This saves power and protects the battery or reduces power consumption. The Google Chrome browser, for example, has a reputation for being power hungry. A few more or less open tabs can make a difference here. The autostart menu should also be cleared out from time to time so as not to unnecessarily load the CPU. More about it here.

There is only one thing you should definitely not do: Try to bring the notebook back up to temperature from the outside, for example with the help of ice packs or ice packs. If it cools down too quickly, fine droplets of condensation water could form inside and the hardware could be permanently disabled.