Dust Causes of Noise in a CPU and how to stop it
Noisy CPU
It is very much irritating to work with a noisy CPU. You will only
realize how noisy the machine has been immediately you switch it off.
Many people will just assume it provided it is working and they can
accomplish what they want. Your computer should be as calm as possible
and provide a cool working environment.
What makes CPU noisy?
The major probable causes are;
Dust
The Computer will always collect dust regardless
of the environment. This is because the air sucked in the CPU can have
some tiny particles. After accumulating for some time, it is visible in
form of a white-cotton like substance. The dust build up blocks the air
vents causing thermal shutdown to the computer. In some cases depending
on the environment, dust is collected when cleaning is done and the
machines in that room are uncovered. Heat attracts dust particles and
the dust can get electronically charged causing short circuit in the
motherboard. When the fan blocks or its RPMs are reduced, the processor
does not get enough air to cool it hence it heats up and lowers the
performance. This is when you will find the computer freezing, you try
to give commands but they can't be carried out.
In connection to dust, the fan can slow down or sometimes stop
rotating completely. When it stops, it means that there is no heat
dissipation thus the heated up air is retained in the CPU. The heat sink
which is in direct contact with the Processor becomes heated up without
cooling. A cut/disconnected fan power cable can also make the fan to
stop working so this also should not be ruled out when diagnosing the
causes of overheating.
Now that the noise is there, how do I stop it or prevent it in future?
1. Blowing Dust
Use a dust blower (with compressed air) to blow off the dust from the
inside of the CPU. When doing this, ensure that you have a dust mask to
prevent the dust from getting into your respiratory system. It is
always wise to unplug the power from the mains before doing this. Leave
the I/O cards intact when blowing because if removed before blowing,
dust can fall in to the bus connectors and cause poor connection after
re-installing them. Place your CPU in an open airy place then blow the
motherboard as well as the fans both on the CPU and the vent holes in
the power supply. This service should be done regularly to prevent the
dust build-up.
2. Apply Thermal Paste
Also known as heat sink paste is a gel applied
between the heat sink and the processor to help in heat conduction. It
does this by filling the tiny air gaps left when the smooth heat sink
surface gets into contact with the processor. Remove the heat sink locks
to gain the access of removing the processor from the socket.Before
applying new paste, make sure you scrap off the old and dried up paste.
Apply a small amount of the paste then spread evenly being careful not
to spill it on the motherboard.
3. Allow enough air flow
Always make sure that your CPU is placed in a
position where there is enough air circulation. Placing it so close to
the wall or blocking the air vents can block the air from flowing hence
causing overheating.
4. Cover your Computer
It is always advisable to cover your machine when not in use using
the dust covers. This will prevent the dust from getting in mostly when
the surroundings are being cleaned.
With these practices you will ensure a smooth running of your CPU and
at the same time save you a great deal from damages that can be caused
by crashing.
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