If you walk away from your computer for more than a few minutesor even for a few seconds if your computer is accessible by othersyou'll want to either lock the computer or switch it to a low-power state that saves energy. That way, the computer can still function, but your files, settings, and programs aren't accessible and can't be viewed by others. If you want to grant access to another user, you can let the other person log on and use his or her own settings. If you need to be away from the computer for extended periods, or you want to add components or move the computer to a new location, just turn it off. Leave It
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