This computer maintenance guide will help clients to install new hardware to a computer or substitute the present hardware. It will also give safety guidelines to avoid unnecessary problems with the computer hardware. This training guide informs the user of it as to the different types of the hardware a computer may have and what the performance of these parts should be.

This computer maintenance and training guide mostly concerns the security, maintenance and cleaning, the inner parts set up and maintenance, and principles for supporting I/O tools, multimedia and mass storing devices and so on.

1. Part I - Safety

Primarily we are concerned with the security regarding ecological, power protection, dirt, static, and heat problems, and the downloading of illegal programs into the computer.

1.1 Safety and the Envir