One of the best ways to cut down on computer repair is through preventative maintenance performed on a regular schedule. As a general rule, you should clean a computer every 3–6 months.
If it is in a dusty environment, however, you should clean it more often.
This section provides guidelines that you can easily put into practice.
Keyboard and Mouse You should check and clean the keyboard periodically.
Dirt, dust, hair, and food particles can accumulate, causing the keys to jam or otherwise malfunction.
Many people clean the keyboard by turning it upside down and shaking it.
A more effective method, however, is to use compressed air. Every 6 months, you can use a can of compressed air to remove the dust from the keyboard
Cleaning a keyboard
If you spill a liquid onto the keyboard, turn off the computer immediately. Disconnect the keyboard, spray it with water to clean it, turn it upside down and shake to remove the liquid, and then use a cloth to dry it as much as possible.
After it is cleaned, leave it upside down for at least 12 hours.
A mouse with a ball (which is a mechanical mouse) can be difficult to move if the rollers are clogged. Cleaning mechanical mice often eliminates jerky or erratic movement of the mouse pointer.
To clean the rollers, you need to remove the bottom cover of the mouse Generally, you will find dirt or hair in the middle of the roller. Remove as much of this debris as much as possible, and then reassemble the mouse.