Educators' Guide for Pedagogy and Assessment
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Unit: 3. Computer system installation
Information Technology
Learning Outcome: 1. I can identify the reasons which require a hardware/software installation/upgrade/replacement

Reasons for upgrade: e.g. user requirements, compatibility, increase storage capacity, increase processing speed, increase hardware reliability, software requirements.

Implications: user training/re-training; hardware compatibility; software compatibility; decommissioning of hardware; service level agreements on new systems; migration of data.
Learning Outcome: 2. I can identify the risks involved when performing an installation/upgrade/replacement and take the necessary precautions to avoid such risks on both human and electronic component terms.

Good health and safety practices: no food/drink/smoking near workplace; clear fire exists; fire fighting equipment at hand; no trailing cables; enough space; good ventilation; adequate clothing; organised equipment.

Risks:
- Electrostatic discharge;
- Physical damage of equipment;
- Negative impact on data (data loss and data corruption);
- Human injury (cuts, bruises, harm to the eye).

Precautions: e.g. anti-static equipment, appropriate use of tools, watch out for excessive force, backups, data-recovery tools, wear protective clothing.
Learning Outcome: 3. I can install/upgrade/replace internal hardware components and configure the necessary software.

Components: RAM; CPU; heat sink; hard disk; graphics card; sound card; network card; power supply unit.


Working procedures:
- Identify the problem and think of a possible solution;
- check for compatibility;
- take data backups;
- prepare the necessary equipment and data backups;
- clean up the computer system;
- install components in the best sequential way;
- test the computer system;
- restore data and install the necessary software;
- set a system restore point.

Ways: BIOS; operating system file manager; device manager; third-party diagnostic tools.

Beep codes identifying hardware problems: e.g. system board error, video adapter error, keyboard adapter error, power supply error, processor error, memory test failure;
Post-test read-outs identify hardware problems: amount of memory; identify drives; date-time setting; processor test.

Issues: Loose or wrongly inserted connections; internally broken cables; dead-on-arrival (DOA) components; installing components in the wrong slot.

System fault: e.g. computer not starting, boot up disk not found, computer continuously restarting, no audio output, no video output, network connection.

Hardware components: e.g. RAM, hard disk, graphics card, sound card, optical drives, PSU, cooling system, battery external storage, motherboard.

Preparation:
- Obtain and check resources (tools, anti-static equipment, cleaning tools, hardware components, software, access rights);
- Develop a test plan;
- Record hardware components' serial numbers;
- Open up computer case following health and safety procedures;
Read the necessary hardware installation guides.


Install/upgrade/replace:
- Remove hardware components which are to be replaced;
- Install new hardware components: e.g. RAM, hard disk, graphics card, sound card, optical drives.
- Reassemble computer;
- Install and configure any necessary software;
- Confirm that the installed hardware is functioning.
Learning Outcome: 4. I can document an installation/upgrade/replacement and identify the importance of registering products.

Importance of documentation: record keeping of work done; warranties of any components; completed test plan; reference point for troubleshooting.

Advantages: e.g. hardware updates, software updates, technical assistance, proof of purchase, service level agreement, promotional offers.


Sorts of maintenance:
- Preventative: e.g. ensure that air vents are free from dust, take regular backups, cleaning the system;
- Corrective: e.g. replace parts when they malfunction, re-attach cables which come loose, re-install software which has become corrupt;
- Perfective: e.g. increase memory, increase screen size, upgrade to a more powerful software application;
- Adaptive: e.g. use adaptators to connect older hardware to new systems or vice-versa, install drivers to accommodate new peripherals, convert old files to work with new version of application.

Documentation stating:
- Reason/s for upgrade/installation/replacement due to a fault or user requirement;
- Suggested installation/upgrades/replacements;
- Implemented changes;
- Log of serial numbers;
- 2 tests for each component installed/upgraded/replaced and their respective results.