Windows 10 has been a critical success since its release, but if you need or want to revert to an older version of Windows, you can uninstall Windows 10 and roll it back to whichever version you prefer.
Though the guide below is written with rolling back to Windows 8.1 in mind, the basic steps work for any Windows operating system going as far back as Windows XP — though we don’t recommend going that far back as Microsoft ended support for it some time ago. Be aware, too, that new computers (especially tablets) may contain components that weren’t manufactured when older Windows versions like Windows 8.1 or Windows 7 were being sold.
If you do decide you want to roll things back and uninstall Windows 10, there are two distinct methods to do so. If you upgraded from Windows 8.1 or 7 within the last 30 days, there’s a more straightforward method of rolling back that takes minimal effort and doesn’t delete your files, which you can read about later on in this post. However, most users will need to install an older version of Windows, or switch to Linux to uninstall Windows 10 without leaving behind a blank hard drive.
Step 1: Backing up and creating installation media
Before beginning anything else, back up your important computer files to a separate location. An external drive or a cloud storage service is excellent, so long as it’s physically disconnected from the Windows computer you’ll be working on. Unfortunately, Windows can’t preserve programs or settings when flashing to an older version (only a newer one), so you’ll also want to get installation media for any crucial programs, especially those that require serial numbers. It’s also worth noting that Microsoft doesn’t support Windows 8 anymore, only Windows 8.1, as it was part of an automatic update cycle.
It’s also a good idea to download drivers for your computer’s various components before you begin the installation process. Doing so will make it easier to get everything up and running if Windows doesn’t automatically select the appropriate drivers. Motherboard chipset, Ethernet, Wi-Fi, and graphics drivers, in particular, can make the setup process much more manageable. Store these drivers on a USB thumb drive for easy access once Windows is finished installing.
Next, get installation media for Windows itself. For Windows 8.1, Microsoft provides a download service that allows you to send the installation files to a new DVD, or even use a flash drive. If you’re installing an older version of Windows, you’ll need the original disc (and possibly an external CD or DVD burner, if your newer laptop doesn’t have a disc drive). Alternatively, you can create a bootable USB drive with a Windows ISO.
You’ll also need the Windows product key for whichever version you chose — this is the 25-digit code that came with your Windows retail box or purchase receipt from Microsoft. It may also be located somewhere on your computer’s case.
A note on Windows 7
While it may be starting to show its age, Windows 7 is still of occasional utility among power users looking to replicate or fix old software, or people who are just stuck in their ways. Windows 7 can’t upgrade, install, or keep files when installed on a system already running Windows 10, so a fresh install is the only way to achieve such a goal.
Our guide to installing Windows 7 has all the links, detailed instructions, and a few caveats about using older operating systems that may help you troubleshoot esoteric issues. The Windows 8 process is much simpler.
Step 2: Reverting back to Windows 8.1
Once you’ve finished backing up your files and programs, remove all other external storage drives, cards, or discs, and insert the Windows installation disc or drive. Restart your computer and boot it from that drive.
This usually requires either entering a keyboard command to open the boot menu, or entering the BIOS (or UEFI on newer systems) and manually selecting the drive. Entering the BIOS usually requires hitting the Delete key — not the Backspace key — over and over on your keyboard immediately after seeing your computer’s splash screen (usually showing the computer manufacturer). Each computer is different, so consult your motherboard manual if you built the computer yourself or the computer manual to see how to enter the BIOS.
Once you’re in the BIOS, you want to look for a boot order or a boot override. These settings allow you to choose which device your computer attempts to load first. You want your Windows installation media loading before your hard drive. For discs, select your CD or DVD drive. For thumb drives, select USB or something similar. Again, all motherboards and computers are a little different, so make sure to have your manual handy.
The Windows setup process will then begin. For Windows 8.1, the first screen lets you select your language, location, and keyboard localization. Click Next, then Install Now. Wait for the setup process to initiate.
Step 3: Installation
Click I Accept The License Terms, then Next on the license screen. The next screen has two options: Upgrade and Custom. Choose Custom — the Windows 8.1 installation system cannot upgrade from a newer version of Windows to an older one.
On this screen, you’ll have to select the installation drive or partition. If your computer has only one hard drive or SSD, then this is the largest partition available. You have two options here: Click the drive and then click Next to preserve old Windows files in a folder in the new installation. This is useful as a secondary backup method, but it will not keep installed programs, and there may be compatibility or permission issues with accessing the old files. Generally, it’s better to start fresh by formatting the install drive: Do this by clicking Format, then OK. Wait for the primary drive to be formatted, then click Next.
On the next screen, the setup program will copy the Windows files from your installation media to your computer and begin installing the operating system itself. This process may take quite some time, so if you’ve got something else to do for thirty minutes to an hour, it’s fine to leave your computer alone, so long as it’s plugged in. Keep an eye on the screen and return when the process is finished. Your computer may restart on its own.
After a few minutes, you should see Windows 8.1 begin its first bootup process. Here, you’ll select a few settings and personal touches. Just follow the on-screen instructions, entering your username and password where prompted. Click Finish.
Alternate method: For Windows 8.1 and 7 free upgrades only
If you’ve utilized Microsoft’s free upgrade from Windows 8.1 or 7 to Windows 10, you can use a more automated process to downgrade your software from Windows itself. While this process is easier than the above because it will preserve some of your files, it’s always a good idea to back up personal data just in case something goes wrong. That’s an appealing option, but there are some caveats.
The process used to work up to 30 days after the upgrade, but ever since the Windows 10 Anniversary Update, that’s been reduced to just ten days after the update. Some claim to have methods of extending that, but we wouldn’t rely on it.
Regardless, after the allotted time, the operating system will delete the previous OS files to make room on the hard drive. If you’ve run Windows 10’s disk cleanup operation, it may have prematurely deleted those files already, but only if you ran it manually.
This process also won’t let you roll back to Windows 8, only Windows 8.1. Part of the Windows 10 upgrade process involves moving to 8.1, so that’s technically the last OS installed on the system. If you want Windows 8 proper, you’ll have to use the instructions up above, and even then, only if you have the original installation media, and turn off updates.
Go to the main Settings menu in Windows 10, click Recovery, then click Go Back to Windows 8.1 or Go Back to Windows 7 and follow the on-screen instructions.
The first thing you will see is a question asking why you’d like to return to an earlier version. This step doesn’t really matter much for your sake, it’s just Microsoft gathering information for its own use and research. Your computer will then display a message saying your files won’t go anywhere. Keep in mind that even though your files will still be there, you will need to reinstall your applications and restore customized settings.
Be aware that this process might revert your password, so you might need to log in with your old password if you created a new one since upgrading to Windows 10.
When you’re ready, click Go Back to Previous Windows and the system will begin rolling back. This process will take a while, and your computer will reboot several times.
You can only use this process in the first month after upgrading, and it isn’t compatible with previous versions of Windows (even the original Windows 8.) The process won’t keep your settings or third-party programs, but it will preserve your local files.