104 - PC Safety Precautions

When building your computer there are those things that you should follow strictly before you start the operation and they are referred to as safety precautions. This is because if you don't abide to them something tragic may happen or you may damage the system.

List of safety precautions needed when assembling and disassembling a system unit.

Electric shock

When working on your PC or any electric-powered equipment, always disconnect it completely from the mains wall socket. Never dismantle the actual PSU in your computer. This unit contains potentially lethal voltages, even when it is disconnected from the supply. They are not the user-repairable. If it fails, replace it with a new one.

Sharp edges

Beware of sharp edges inside computer cases and small pins on the boards. It may seem harmless but the case edges can be as sharp as a knife, and can remove large chunks of flesh if accidentally nudged with a slipping hand.


Always remember to fully disconnect the power before connecting/disconnecting components or cables.

When making cabling connections of any kind, use firm, even pressure but never excessive force. Small signal pins are very easily damaged if connected incorrectly. If it just won’t fit, try to establish a reason rather than giving it a hopeful shove. Most connectors have some kind of alignment system to prevent incorrect connection.


Computer devices/peripherals are generally very delicate in nature. Handle them with extra care and always employ some method to disperse static electricity. A good trick here is to keep in mind how much it costs to replace when you take it out of the packaging.


With the exception of the exterior of the case, never try to clean any part of your system with any liquid detergents or cloths.

If you find a build-up of dust inside the machine after some time, disconnect the unit completely, remove the case sides and use an Air Duster to blow out the dust from the case. Air Duster should be available from most electronic supply shops, and is basically a can of clean, compressed air.

The key to working with PC's is to stay calm, check your work over and over again, and if it still doesn't work, ask someone who knows.

Caution: If you're a child or a teen, you will need a parent, teacher, or other adult to help you.

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