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•In the early days of personal computing, the alleged damage
caused by turning PCs on and off may have held some truth. But thanks to
improved, modern hardware, these fears can be put to rest. According to the
Rocky Mountain Institute: "Modern computers are designed to handle
40,000 on/off cycles before failure, and you're not likely to approach that
number during the average computer's five to seven year life span. In fact,
IBM and Hewlett Packard encourage their own employees to turn off idle computers,
and some studies indicate it would require on/off cycling every five minutes
to harm the hard drive." Powering down your computer may actually extend
its life cycle by reducing the intake of dust, which can cause fans to seize
up or parts of circuit boards to overheat.
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