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warning don't turn off your computer during this update

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as often as you've seen this message you've probably wondered well

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what exactly would happen if i turned off the computer or worse yet lost power

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during an update and what if Windows update gets stuck and just never

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completes is it safe to restart the pc or are you

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doomed to have something go wrong so here's the deal back when Windows vista

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first came out microsoft was trying to find a way to make the update process a

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little more robust with more and more people getting updates delivered over

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the internet so they introduced a mechanism called component based

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servicing cbs then no not that one does a couple of things

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differently to ensure that updates are installed correctly first it checks to

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make sure that all required files are present before starting installation and

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this is perhaps more relevant for what we're discussing today it marks an

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update as complete after it's installed

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cbs is part of the underlying architecture of Windows update so if

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there's a power loss or you just unplug your computer during an update as

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part of some kind of masochistic experiment it'll kick back in once you

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boot back into Windows and see that an update wasn't marked as complete now i

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won't know why the update wasn't completed but it also doesn't have to

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instead cbs just rolls back whatever changes the updater made and restores

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whatever the previous state was before you started the install allowing you to

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try again later without damaging anything on your pc

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so those please do not turn off your computer messages don't always mean that

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you're at risk of an imminent catastrophe if you don't follow the

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instructions with a caveat cbs obviously requires

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critical files that help run Windows itself in order for it to operate

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so while cbs might work perfectly if a shutdown occurs while Windows is

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updating the gui or installing some

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non-critical feature you still might be in for a world of trouble if the power

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loss happens while core Windows components are being updated and

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unfortunately you've got no way of knowing when that's

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happening because Windows doesn't tell you

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the result can be anything from certain aspects of Windows not functioning

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correctly to Windows refusing to boot at all instead giving you a blue screen of

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death or simply a blank display when you try to start up the system uh-oh but if

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this happens try not to panic even the most disastrous failed updates

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shouldn't touch the personal data on the drive so if your pc won't boot into

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Windows you can use a Windows installation usb drive that you can

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easily create on another system and boot into that under troubleshoot then you

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can use startup repair to fix the damaged Windows files that are giving

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you the issue then if that doesn't work for some reason you can always open up command

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prompt from that same usb type notepad.exe to open notepad then use the

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open command in notepad to bring up a file explorer window that will allow you

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to copy any files you need to another storage device

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or this is the much easier way you can just remove the drive from your computer

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entirely connect it as a secondary drive to a different pc and copy all your

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files that way but okay what if you feel like you have to restart during the

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update process because Windows update is simply not moving and is stuck at a

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certain percentage for a very long time like even for hours this can happen for

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any number of reasons but if it's been stuck for an excessive

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period and it looks like your drive isn't busy anymore like the leds not

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blinkity blinking it probably won't hurt anything to restart the system and take

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another crack at it once it comes up you can use a troubleshooter that's built

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into Windows to clear the Windows update cache which can often fix problems with

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Windows update just type troubleshoot Windows update into the Windows 10

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search bar to find it so bottom line then try not to panic if your update

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gets interrupted far worse things could happen to your data like having Linus

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handle it apparently this script was not written assuming that i would host it

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but i did john i saw that and i also saw our sponsor thanks to storyblocks for

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techquickie thanks for watching guys like dislike check out our other videos

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