This core module describes the skills, knowledge and attitude required to maintain computer. The learner will be able to describe the internal components of a computer as well as its peripherals, assemble a computer system, install operating systems and troubleshoot them using software tools and diagnostics, installation of printer and IT security measures. These materials will also assist the student in developing the skills necessary to work as a technician in the field of IT. He/she will also be able to select and arrange different materials, equipment and tools used when doing Computer System maintenance and troubleshooting.