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Summary
To disable Fast Startup on Windows 10, open the Power Options menu and go to Additional Power Settings > Choose What the Power Buttons Do. Click “Change Settings That Are Currently Unavailable” and uncheck “Turn On Fast Startup”, then save your changes.
Windows 10’s Fast Startup featurehelps turn on your computer faster, but there are times when you may want to disable Fast Startup. We’ll show you what those occasions are and how to turn the feature off.

What Does Fast Startup Do in Windows 10?
As the name implies, Fast Startup allows you toboot up your computer faster. It achieves faster speeds by combining aregular shutdown and hibernation.
When Fast Startup mode is enabled and youturn off your PC, Windows saves the system kernel, drivers, and current system state to ahibernation file. Unlike proper hibernation, your login sessions and apps aren’t saved.

Then, when youturn your machine back on, those saved items (kernel, drivers, and system state) are loaded into theRAM, allowing you to quickly get to your desktop. This is basically how this feature works on your Windows 10 PC.
Why Disable Fast Startup?
Despite the benefits it brings, there are multiple reasons you may want to disable Fast Startup on your Windows 10laptopor desktop. One is that it canprevent you from installing Windows updates. This happens because an updaterequires a full shutdownto be brought into effect. Arebootwill complete the installation while Fast Startup is enabled, but a shutdown won’t.
Another case where you might want to disable Fast Startup is when you have trouble managingencrypted disk images. You may also want to turn off this feature if youdual-boot your PCand want access to your Windows drive while you’re running your secondaryoperating system.

If you want toaccess your BIOS/UEFI settings, sometimes it’s not possible when Fast Startup is enabled. So if you’re having trouble entering the BIOS, you may need to toggle off Fast Startup before you’re able to proceed.
Do any of those situations apply to you? If so, follow our instructions below to disable fast booting. Remember that you can always re-enable Fast Startup later if you decide you want it back.

How to Turn Off Windows 10’s Fast Boot Feature in the Settings App
To disable Fast Startup, first,right-clickyour “Start” menu icon and choose “Power Options.”
On the “Power & Sleep” screen, in the right sidebar, click “Additional Power Settings.”

You’ll land on a “Power Options” window. Here, in the left sidebar, click “Choose What the Power Buttons Do.”
On the following page, at the top, select “Change Settings That Are Currently Unavailable.” This ensures you can toggle off the Fast Startup option.
On the same page, uncheck the “Turn On Fast Startup” option. Then, at the bottom, click “Save Changes.”
You’ve successfully disabled the Fast Startup feature on your PC. If you decide you want fast booting enabled again, just follow the same process but check the “Turn On Fast Startup” box before saving your changes.
While you’re optimizing your Windows 10 PC, learnhow and why you might want to disable hibernate modetoo.