Why is the laptop noisy and how to fix it

Often the noise of a notebook computer is caused by internal contamination. Accumulated dust makes it difficult for the fans to work, and they begin to hum. Noise can also be caused by system cooling problems or broken parts. The computer repair expert Ягупов Геннадий will tell you more about all this.

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Laptop is noisy under heavy load

When the device is running “heavy” applications, the temperature of the internal components rises significantly. Built-in temperature sensors detect the heating of parts, and if its level becomes critical, they increase the speed of the fans or include additional coolers.

By “heavy” programs are meant those that use a large amount of system resources. In the first place, these are games and professional utilities for programming, video editing and photo editing. Such applications load the system, in particular the processor and the video card – the most warm hardware parts.

On computer forums, it may be advisable to reduce the fan speed. Indeed, this method reduces the noise level. But its use is categorically not recommended if you want your laptop to work for a long time and the system does not crash. Overheating resulting from slowing down the coolers can lead to system degradation and arbitrary device shutdowns.

Prolonged exposure to high temperatures adversely affects electronic components. For example, it can cause the capacitors to overheat, causing the electrolyte inside them to expand. As a result, the capacitors swell up to the point of breaking the integrity of the shell. Such parts need to be replaced.

A good solution to lower the temperature is to buy an active cooling pad. It is equipped with built-in fans, the speed of which is usually adjustable. When using such a stand, the laptop makes less noise, as the internal cooling does not go into emergency mode. Devices of this type are usually powered via USB.

Tip! When buying a cradle come to the store with your notebook. So you can be sure that its size suits you and that the device is firmly attached to the cooling surface.

There are also passive stands for laptop cooling. They do not have built-in coolers and are often made of metal with high thermal conductivity. The working surface is perforated, allowing the free flow of air to the laptop. They are most effective with laptops whose vents are located at the bottom. According to an experienced specialist Ягупов

Excessive notebook noise with no load

If the laptop is noisy immediately after you turn it on, the cause may be clogging inside the case. Hardware components are cooled by fans. When dust and small debris settle on their blades, the noise level as the blades rotate increases. When there is too much dust, the computer may even hum.

To see if it’s the dirt that’s causing the noise, compare your laptop’s current noise level to its original level. If the device was significantly quieter immediately after purchase, it is worth cleaning it. You can do it at home, but if the warranty period has not yet expired, self-disassembly will lead to a loss of warranty. In this case, it is better to take the computer to the service center.

Important: To keep your notebook from getting dirty, use it on a flat, smooth surface. If you use your device in bed or on the floor, dust and fine lint will get inside.

When disassembling your laptop, use the instructions for your model. Detailed video tutorials on disassembly and reassembly can be found online. Be as careful as possible and do not use excessive force to disconnect and remove parts, as they are quite easy to break. The following tools can be used for cleaning:

  • A vacuum cleaner that works by blowing
  • Brushes with a stiff lint
  • A canister with compressed air
  • Cotton swabs

The more efficiently the cooling will be done, the less often additional coolers will be turned on during operation. This will reduce the amount of noise produced. For the best cooling performance, replace the thermal paste on all parts where it was. You can buy thermal paste at a computer store.

Remove the old dried layer with a cloth or cotton swab moistened with alcohol. The new paste is applied with a thin layer on the surface of the part (CPU, graphics chip video card) and then the cooler is installed on it. Thermal paste provides high heat transfer due to the displacement of air from the voids on the surface.

Clicking noises inside the case

Laptop noise can manifest itself as random clicking noises during operation. They are caused by a bad sector on the hard disk. When the HDD malfunctions there are areas on the surface which are difficult to read and write data to. When the system tries to access them, a clicking noise occurs. MHDD, Victoria or HDDScan can be used to diagnose these sectors.

Download the archive containing the free HDDScan program, unzip it and open the executable file. The application works without installing it on your computer. From the “Select Drive” drop-down list, select the hard drive you want to scan. Click on the blue button and select the first item – “Surface Tests”.

The left part of the “Test Selection” window duplicates the information about the hard disk. The fields “Start LBA” and “End LBA” allow setting the numbers of the start and the end data block. If the test is done for the first time, leave them unchanged. To speed up the analysis you can increase the parameter “Block Size”. The default value is 256, but increasing it to 512 will double the scanning speed.

You may choose one of four different modes of surface scanning:

  • Verify
  • Read
  • Erase
  • Butterfly Read

Select the “Read” mode, to test the ability to read data in different sectors, then press the “Add Test” button. In the main table will appear a line with the running test, with the basic parameters. To open detailed information, double-click on the entry that appears.

A window will open with the disk’s sector access table. Normal read time is less than 5 milliseconds and such blocks are displayed in light gray color. The right part of the window shows statistics of blocks with different access times. The higher the number of sectors with long access times, the slower the disk will run.

The number of bad sectors is blue and can be checked in the line “Bads”. If at the end of the check there are several dozen or hundreds of them, the hard drive is defective. This may not only cause increased noise, but also further loss of user information.

Noise due to dried out fan grease

Quiet operation of notebook fans is ensured by the lubricant applied by the manufacturer during their manufacture. Prolonged intensive use of the device will cause it to dry out and become more viscous. Coolers stop working smoothly, noise and vibration appear. Check the fans when disassembling the laptop to clean the dust. Disconnect the cooler and push the blades with your finger to make them spin. If the fan stops spinning after just a few revolutions, the grease should be replaced.

To keep the coolers running smoothly, manufacturers advise lubricating them at least once a year. To do this, remove the label that covers the axial mechanism. If there is a rubber plug, take it out with a needle or tweezers. Apply a couple of drops of oil and reassemble the cooler. Machine oil, silicone oil, or synthetic oil is suitable for lubrication.

Important: Do not use cooking oil to lubricate the cooler. These materials dry out too quickly when exposed to high temperatures.



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