How to clean your computer safely, inside and out.
How often do you clean inside your computer case? Did you realize that this is a necessity for the computer 
to run at its optimal levels? Having dust and dirt build up inside your computer can restrict the airflow and cause serious damage to your components. One common example is when dust gathers on the heat sink and fan. If left there it can eventually cause the processor to overheat and shutdown the computer without warning.
The main factor to consider when cleaning inside a computer is safety. If you are not familiar with opening a computer case and the precautions you have to take, please read this article first. There are important steps to complete before starting to clean your system like removing all plugs from the computer.
Acceptable Tools to use
You don’t need all the fancy cleaning tools available. Everyday household items will do. Here is a list of some of the tools I use to clean my computer.
Cleaning Inside your computer
Soft paint brush: I use this when an air compressor is not available. Gently brush the dust from inside the case. Make sure you do not accidentally move any wires or connections.
Air compressor: I would choose to use this before anything. Its quick and easy and removes dust properly. Do not go too close to the motherboard though. It will work fine from a distance. It is also best to remove the cpu fan and clean that separately.
Compressed air can: This is a disposable compressed air can that will blow the dust out. Be sure to keep the can upright, otherwise it will leak liquid. Always read the instructions on the can.
Vacuum: Some people use this to suck the dust from inside their computer case, however a normal household one will not do. It is best to use a battery operated, handheld vacuum specifically designed for this purpose. Household vacuums cause static electricity which can damage your computer components.
Dust Mask: This is great for those really dusty old computers. I don’t think it would be very healthy to breathe it all in.
Cleaning the exterior and components
Water: Use water sparingly. It should only be used to slightly dampen your cloth. You do not want water dripping all over your computer.
Rubbing alcohol: I always choose to use this before water as it evaporates fast. It is also great for cleaning dirt and oily marks from the case, mouse and keyboard.
Cloth: (lint free) You should use a cloth to clean the exterior of the case, the mouse, cords, and keyboard. Only slightly damp. Fold your cloth over a few times to get in between the keys on the keyboard.
Vacuum: You can use a vacuum cleaner to extract dust and food crumbs from your keyboard.
Cotton Wool or Swabs: Also good for reaching those hard to reach places.
Car dash oil: This is great for blending in scratches on monitors and sometimes cases, like a Dell GX270 desktop. Don’t use too much, as you do not want it dripping into the monitor air vents.
Eucalyptus oil: I use this to remove permanent pen from monitors or cases. Just put some on a cloth and rub on the writing and it will start to dissolve.
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