Be careful with the tools that may cause short circuit (such as screw drivers) electrocution.

Always pull the cable connector on the cable and not on the handle itself

Be sure you’re standing in a dry place and use only slipper when standing on the ground or in a concrete floor.

Make sure that the pins are properly aligned when connecting a cable connector.

You may take any liquid such as mineral water or soft drinks near your working area or near computers.

Personal protective equipment is correctly used in accordance with organization OHS procedures and practice.

Hazard/risks in the workplace and their corresponding indicators are identified to minimize or eliminate risk to co-workers, workplace and environment.

Take necessary precautions to protect the component of the computer from damaged cause by Electrostatic Discharge (ESD).

You can hold the components of PC anywhere specially parts of the motherboard.

Read and follow instruction on the manual carefully.

You can work alone provided that this is the first time your assembling, dis-assembling a computer system.