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Even if you know absolutely nothing about computers, turning off a PC is pretty simple, right?

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When you press the button on the front or the side or just click shut down on the Windows start menu,

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and that's supposed to do the trick. But wait!

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It turns out that shut down in Windows 10 doesn't actually mean shut down.

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Is this just another example of computer companies not trusting us to operate our own stuff

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or something else going on? So here's the deal.

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Remember the hibernate feature that became popular back in the days of Windows 2000,

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where you could save all the contents of your RAM to your disk before powering the computer off?

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Which would significantly cut down on startup time? Do you remember that?

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Hibernate was a big deal because older laptops tended to be power hogs.

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So hibernate offered a way to quickly resume working without putting the machine in standby or sleep modes

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that would still drop power. As laptops have become more power efficient over the years,

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hibernate was de-emphasized, although you can still show the hibernate command

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in the start menu by checking this box. In favor of a feature called hybrid sleep,

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which would put the computer in sleep mode but also dump the contents of RAM to the disk.

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So the computer would wake up more quickly than it would from pure hibernation,

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but in case of power loss, the system could still recover its previous state

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from its hard drive or SSD. So with that established, let's bring it back to the title of the video.

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What happens when you click shut down? Well, Microsoft has taken the idea behind hybrid sleep

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and added yet another feature called fast startup

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that actually changes the way your computer shuts down.

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Here's how it works. Fast startup, which is enabled by default on Windows 10,

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takes the state of the Windows kernel, which is essentially the core elements

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of the operating system and saves it to the disk. However, this only happens after Windows logs you off,

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so none of the data from programs or files you were working on gets saved.

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In this sense, it's closer to a normal shutdown than hibernation, but doesn't get 100% of the way there.

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The benefit of fast startup is exactly what it sounds like.

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Your PC doesn't have to spend tons of time re-initializing critical Windows components

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when you power the system back on, allowing for shorter boot times.

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However, there's a downside that can cause really puzzling issues

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if you're unaware that fast startup even exists. Problems that are present within the kernel itself,

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such as a misbehaving device driver, that would normally disappear with a full shutdown

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can recur when you start your computer back up if you have fast startup enabled.

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So because Microsoft figures people are more likely to hit restart than shutdown

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if some bug necessitates a reboot, restart actually cycles your PC through a full shutdown,

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whereas shutdown counter-intuitively does not.

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Wow, as wild. But there are ways around fast startup

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if you wanna ensure your computer is completely clearing out its current state

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every time you turn it off. You can simply disable fast startup

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by going to control panel, then power settings, then choose what the power buttons do,

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not the most obvious place to find it, but at least it's a simple fix.

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You can also leave fast startup enabled and perform a full shutdown on demand

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by holding the shift key when clicking shutdown from the start menu.

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There's a chance you may not even miss the slightly faster startup if you're running a modern system with a speedy SSD.

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So it might be worth it to bust out the stopwatch and see how much time you're saving

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with the feature on versus off, a totally normal thing that people do with their free time.

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Well, that's it for this video, guys. Thanks for watching. Like the video, dislike the video,

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whatever your heart desires. And if you desire this, check out our other videos.

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