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You know the signs: The lights flicker, your humidifier stops humming, and some piece of tech—there’s always one—makes a mournfully long beep from another room to let you know that it’s losing ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You know the signs: The lights flicker, your humidifier stops humming, and some piece of tech—there’s ...

Your computer holds important files and apps that you can't afford to lose. Here's how often you should back up your PC so you can recover if disaster strikes.