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Chapter 35. Using the Tools of the Trade > Safety Precautions When You Work on ...

Safety Precautions When You Work on Your PC

Whenever you work on your PC, you must put a number of safety precautions into practice, not only to protect your PC from possible damage, but also to protect yourself from possible harm. Neither working on PCs nor PCs themselves is inherently dangerous, but you need to be aware of some hidden risks.

Unplugging Your PC

This is the number-one safety precaution you need to be aware of, and it cannot be repeated often enough. Either unplug your PC at the wall outlet or from the back of the PC. Don't merely rely on the on/off rocker switch because on/off rocker switches have been known to stick or malfunction. Besides risking a potentially lethal electrical shock, you can damage your PC and its internal components if you forget it is plugged in and try to remove an interface card or other electronic device while it is still receiving current. You could also accidentally drop a screwdriver or other metal tool on your main system board and cause a short, or worse.


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