The myths that you should know are the following:
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It is bad for the computer to have magnets stuck to the tower
This myth is false . It won't harm the tower, but it will harm the monitor , wearing down its colors. To verify this, simply hold a screwdriver with a magnetic tip close to the monitor and you'll see how the screen's colors become distorted.
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Pushing the CD tray by hand to insert it is harmful
This myth is: False . Nothing happens as long as it's pushed with normal force; that's what it's made for.
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Spilling water on the keyboard can ruin how it works
This myth is: True . The metal pieces under the letters get ruined, short-circuit, and burn out.
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Es necesario there is a gap between the monitor and the wall behind it
This myth is false . The environment should generally be well-ventilated, but a large distance between monitors isn't essential. Having another monitor behind you (as is common in many offices) is actually worse because it can cause interference between the computers.
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When the computer spends all night on it is better to turn it off and on again (restart it)
This myth is false . It can continue working perfectly. Although it may seem otherwise (and you might be tempted to leave it off for a while to let it rest, following human logic), the hard drive is better preserved if it remains on and isn't turned off repeatedly. For energy efficiency reasons, it's not advisable to leave it on for several days, but disregarding the cost factor, it could remain active all the time. They were designed for that.
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The computer consumes more energy when turned on than it consumes when working for several hours
This myth is false . Turning it on doesn't consume enough energy to exceed its operating hours. Turning it off saves energy, and leaving it on consumes energy, just like any other appliance.
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It is bad for the computer to have the cell phone nearby
This myth is: False . It doesn't harm you, it can only cause interference.
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After turning off the computer, it is best to let it rest for a few seconds before turning it on again.
This myth is: True . It is recommended to wait a few seconds before pressing the power button again. 10 seconds is enough.
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The tower (case) of the computer should not be moved while it is turned on because the hard disk may be burned.
This myth is false . The centrifugal force with which the hard drive spins is so great that nothing happens if the tower is moved. This is especially true for laptops, as they are designed to withstand movement. Of course, none of this applies if the computer is dropped or bumped.
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It is convenient to use a screensaver for the sake of the monitor
This myth is: True . Because the screen protector mechanism ensures that the screen's colors wear evenly. By constantly refreshing the images, the wear doesn't occur in the same area.
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When there is an electrical storm it is necessary to disconnect the computer from the electrical power
This myth is: True . It's almost a must when it comes to a thunderstorm. An astonishing number of modems and power supplies are damaged by lightning strikes.
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You should not look at the red light emitted by the optical mouses
This myth is: True . It won't blind anyone, but it is a bright light. Even more harmful is a mouse with a laser pointer underneath; that light goes directly to the retina of the eye.
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In laptops, the power cable must first be plugged into the computer
This myth is false . It can be done either way. If the goal is to prevent a short circuit from damaging the computer when plugging it in, it's good to know that laptop power supplies are multi-voltage, supporting 90 to 240 volts, making them extremely stable.
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Whenever you turn off the computer you must turn off the monitor
This myth is false . When the tower is turned off, it enters a state where it consumes very little energy and doesn't suffer any wear and tear. The decision ultimately comes down to saving money, even though the energy consumption is minimal.
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You should not place CDs, floppy disks, etc., on the tower
This myth is: False . Nothing placed on it will affect it, unless it is wet and water can reach the device.
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The computer should not be exposed to the sun
This myth is: True . It overheats more than with normal use, shortening the equipment's lifespan.
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If the hard drive is full more than 80% of its capacity it slows down the computer
This myth is: True . It's always a matter of percentages; even if you have 10 GB free, if that's less than 20% of the disk's capacity, the computer will run slowly.
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Do not remove a USB memory (pendrive) without notifying the computer.
This myth is: True . You must select the "safely remove" option before unplugging it. Otherwise, you risk damaging the USB drive.
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If you have a Windows desktop full of icons, you slow down the computer
This myth is: True . The icons that matter are those of programs or files; shortcuts don't cause problems. The issue is that the computer's video card constantly refreshes the information displayed on the screen, and when there are more icons, it takes longer. This is more noticeable on older computers or those with less powerful video cards.
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Force shutdown of computer damages hard drive
This myth is: True . If power is cut to the hard drive while it is reading or writing to any part of the system, it can be damaged. Furthermore, when the computer is suddenly shut down, the platters covering the hard drive (which spins at up to 10 revolutions per minute) can land on it and chip away at it until they reach their resting position, leaving significant marks. When you select the "shut down" option, the entire system prepares to rest and suspends all activities. Each component returns to its proper place.
Source: CarlosLeopoldo