If there's a power outage in your house almost everything electrical turns off, the exception to this is objects with batteries, if you're on your computer and the power goes out, you lose any unsaved data that you have, if you're on a laptop, you'll usually be okay. This is because as laptops run on batteries. And you're very worried about unexpectedly losing power while you're on the computer and losing any unsaved data you've been working on getting, get yourself something called an uninterruptible power supply, also known as UPS, a constantly charges your computer through a battery, while the battery is constantly charged by your outlet.
If the power does go out a UPS will keep your computer on for a few minutes, this is plenty of time to save your work and shut down your computer, more expensive UPS's actually have the capability to save your work and shut down your PC for you, a bonus is that most UPS's also serve as surge protectors. UPS's are also known as battery backups, and to use one you going to want to plug into the wall for 12 hours, then you going to plug your computer and your monitor into the available outlets.
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