When wondering why a computer is noisy, one should remember that this electronic-mechanical device, despite its high technology, has the ability to wear out, break, become dirty. Similar design changes in cars are usually accompanied by various sounds: rattling, buzzing, crackling. Most often, the sources of extra decibels in a computer or laptop are fans of cooling systems, hard drives and optical drives, as well as the case of the system unit.
If a completely new computer suddenly began to make noise, then most likely it has a factory defect. In such cases, it is recommended to contact the seller and request that this problem be fixed. If it is found that the computer is noisy, after the expiration of the warranty period of its main components, then you will have to get rid of the excess sound of the system unit yourself. As a last resort, in every city there are service centers in which they can easily get rid of this trouble.
The main and most frequent reason why the computer is noisy is the malfunctioning fans of the processor cooling system, power supply, video card, and case. In order to find the source, it is necessary to remove the cover from the system unit and take turns, for one second, by hand, stop the rotation of each fan.
If the culprit is found, then you should turn off the computer, disconnect it from the network and fix the problem. To do this, you may need a screwdriver, a nipple, compressed air, and possibly thermal grease.
First of all, the fan blades should be cleaned of dust adhering to them. Dirt by its weight changes their center of gravity and aerodynamics, which leads to wear of bearings and, as a result, rattling and noise.
Dust deposited on the heatsink of the processor cooler interferes with heat transfer and leads to overheating. As a result, the cooler fan is forced to rotate faster, providing adequate cooling. Hence the superfluous buzz.
If there is reason to believe that the bearings of rotating elements emit noise, then it is worth lubricating them with special oil, using a grease fitting.
When all measures for cleaning and lubricating the cooling system of the processor are carried out, but did not give a positive result, you need to try to replace the thermal grease. Alternatively, accelerated rotation of the cooler fan may occur due to lost settings in the BIOS.
One of the reasons why a computer is noisy is because hard drives work. Sounds made by the hard drive can have two sources: a disk rotation mechanism and a positioning head for reading and writing information.
In the first case, it will not be possible to get rid of the noise, since the hard drive is most likely worn out. In the second case, you can adjust the speed of the heads using a special program downloaded from the manufacturer’s website, or, as an option, with AAMTool or MHDD utilities.
Other, rarer reasons why the computer is noisy are a malfunction in CD or DVD drives, poor-quality mounting of these devices, and the use of dirty, stained CDs.
Rotating at maximum speed discs in the optical drive can make a loud noise. To watch movies and play music, such speeds are not needed, so you can limit them using special utilities, for example, Nero.
Sometimes, the casing of the system unit may become the culprit that the computer is noisy. Vibrations and vibrations transmitted from the internal components to the housing covers through loose or loose mounts turn into rattling sounds. To eliminate the resonance, it is necessary to fix the device on the case somewhere denser, somewhere to put a rubber washer, somewhere to glue the sound-insulating, vibration-absorbing material.