It is safe to say that any laptop owner at least once wondered: “Why is the laptop so noisy?” Indeed, now even a child knows that there are electronic boards inside the computer and laptop. But the work of electronics is absolutely silent!
In fact, everything is simple - it is not electronic components that make noise, but active cooling systems that remove heat from the heating elements of the laptop. During operation, the metal fins of the radiators and fan blades are covered with a layer of dust, which significantly worsens the temperature regime. Logic circuits increase the speed of rotation of the fan blades (hence the increased noise level), but even this does not provide effective heat dissipation - the laptop requires immediate revision. It would seem that it is enough to clean the cooling system and the laptop will work like new. Unfortunately, as in everything, there are some features, without which self-cleaning may not bring the desired results. One of them is the replacement of thermal paste in a laptop.
Thermal grease is a special plastic mixture, a thin layer of which is applied as an intermediate thermal interface between the heating element and the metal radiator. Its distinctive feature is its high thermal conductivity, that is, in fact, its presence does not impair the transfer of heat from microcircuits to radiators. Thanks to the use of thermal paste, it is possible to neutralize the influence of possible processing errors of the contacting surfaces: when applied, it fills all the irregularities, thereby ensuring perfect contact and heat transfer. Replacing the thermal paste on the laptop is to update the factory thermal paste with a new one. The internal device of a personal computer and a laptop is similar, therefore, thermal grease for a laptop and thermal grease for a computer are one and the same. Manufacturers offer a wide selection of thermal greases, the composition of which is usually kept secret. Here are just a few of them: the usual Soviet-era paste KPT-8 based on an organic silicon compound; Silver from Gigabyte with silver particles; Arctic Silver with ceramic inclusions, which retains its characteristics even at sub-zero temperatures (a favorite thermal paste of overclockers), etc.
Replacement of thermal paste in a laptop is necessary if, as a result of cleaning the cooling system from dust, the temperature regime has not improved. It is impossible to definitely indicate which temperature is normal, because it depends on a number of factors: the design features of the laptop, its internal components, type of programs, operating conditions. The need to update the thermal paste can be determined by an indirect indication: the laptop is very noisy and heats up even in "light" programs, such as browsing the Internet or reading texts. In this case, replacing the thermal paste in the laptop may help.
Any service center will gladly take up this work, because its cost is quite high. If there is a shyness in funds or a desire to fix your electronic assistant on your own, you should first make sure that the warranty period of the laptop is over. The fact is that an independent opening of the case deprives the guarantee. So, the replacement of thermal paste in the laptop begins with the removal of the bottom cover of the case, which provides access to the cooling system. We carefully examine the internal device: many modern laptops use heat pipes, so you should dismantle them without haste. Usually no difficulties arise, the main thing is to remember the original location. Having removed the locks (if any) and unscrewed the screws, remove the heat pipe. It may take a little effort, because due to constant heating, the factory thermal paste dries and glues microcircuits with radiators. We remove the old thermal grease, and in its place we apply a thin layer of a new one. Then we collect everything in reverse order.