Windows 8 came with a feature called Fast Boot. In Windows 10 it got renamed to Fast Startup. Microsoft never publicly stated why they decided to change the name, but it might have something to do with fastboot already being a common word within the Android community that has nothing to do with getting Android to boot quickly.

Many things deserve some recognition for being, at least partially, responsible for helping make Windows 10 PC’s boot quicker than older PC’s. The revamped Task Manager that allows users to manage startup applications a lot easier being one of them. There’s also a lot of technical stuff going on that makes Windows boot quicker nowadays which involves a different development of the boot process. On top of those things, Windows 10 also comes with Fast Startup mode that can be turned on or off from the settings when you use your computer. By default, this feature is turned on, so you are already reaping the benefits of it, but you can turn it off if you like.

Why in the world would anyone want to turn off the Fast Startup mode if it makes the PC quicker you ask? There are a few cons to having the Fast Startup mode enabled that, for some people, might be a deal breaker.

Potential Cons of Using Fast Startup Mode in Windows 10

Part of the reason why Fast Startup mode is so fantastic is that it isn’t actually that fantastic. It cheats a little bit. With Fast Startup turned on the computer doesn’t shut down the same way it typically would do. Your software updates are designed in such a way that they begin installing when you are using the computer, but they don’t start installing until you go to shut down. There are some suggestions out there, including from tech experts that write for some of the largest Microsoft blogs on the planet, that Fast Startup might get in the way of some of those updates. We don’t necessarily believe them because we’ve been using a computer with Fast Startup turned on the whole time, and system updates are still working, but we also can’t confirm whether or not some additional ones might have arrived or the current ones might have come quicker than what they did. This one is still open for interpretation.

It’s possible that Fast Startup doesn’t work well together with some drive encryption programs that are available out there. According to some leading Microsoft sites, TrueCrypt, one of the more well known third-party encryption programs for Windows 10, is one of them. I’ve written before about how encryption works in Windows 10 and why you might not want to have it running on your computer anyway, so it’s fine to disable encryption if you don’t need it. Windows 10 comes with full drive encryption but only if you have the Pro or Enterprises editions. It doesn’t come with the Windows 10 Home anyway, so this isn’t a problem for most people out there.

“Computers that don’t support hibernation won’t support Fast Startup Mode” is another potential myth as well. The computer that is being used today to write this post does not have a Hibernation Mode options from the Start menu when clicking on the button to shut the computer down; it comes with “Sleep,” “Restart” and “Shut down” only, so it might depend on the definition of support. If this computer does support hibernation, it’s not something that I’m aware of. Still, it’s something you might want to consider because it’s something that experts are suggesting might be a problem.

From our understanding Hibernate is missing from Windows 10 now because Fast Startup Mode is quicker than it was on computers, so there isn’t a real need for it to be there anymore. Fast Startup Mode works by saving the image kernel and loaded drivers to the hiberfile that’s located on the C: drive (it can be found at the C:\hiberfil.sys location of your computers hard drive from File Explorer if you want to go searching for it.) The only definitive reason why you might want to turn this off is, so it no longer loads stuff from that hiberfile.

Unusual Battery Drain

With Fast Startup mode turned on, you can probably expect a little bit more battery drain than normal because not as much hardware is shutting down. Microsoft has likely fine-turned this so there isn’t much of a noticeable difference.

However, after listening to some of our readers, we can conclude that some people seem to be suffering from an unusual battery drain with Fast Startup mode turned on. So if you notice 10-25% more battery drain than you would have expected, you might want to disable this option (at least for now) and then try enabling it again in the future after you’ve updated to some newer versions of the Windows operating system, when the problem might have been rectified.

Here’s what you need to enable or disable the new Fast Startup mode that all versions of Windows 10 now come with turned on by default.

How to Turn On/Off Fast Startup in Windows 10

You can change the Fast Startup settings, so it is on or off from the Control panel in Windows 10. To get started, make sure you have the Control Panel open so that it is showing its more classic views with the smaller icons on the computer’s display and then click on the “Power Options” link.

Next look in the left side pane for the “Choose what the power buttons do” link and click on it.

You can actually see the Shutdown settings available at the bottom of this window, but they aren’t available for you to use yet until you click on the “Change settings that are currently unavailable” link. Do that now to continue.

The Shutdown settings are now available for you to choose from and the top one on the list is the one you want for turning on or off the Fast Startup mode. Deselect the box next to where it says “Turn on fast startup (recommended)” if you want to turn it off and then make sure there is a checkmark in that box whenever the time comes for wanting to turn it back on again.

Windows 10 has Fast Startup turned on by default because most of the caveats you read about it are just myths or perhaps once were problems that now have been phased out with Windows software updates. There isn’t much harm in turning this setting back on again if you had it off in the past.

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