How to Install Windows 10 on Your PC: Complete Instructions

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Learn how to create installation media & install Windows 10

Co-authored by Travis Boylls Reviewed by Stan Kats

Last Updated: October 21, 2025 Fact Checked

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First Steps

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Creating an Install Disk

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Booting from Installation Media

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Installing Windows 10

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Video

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Q&A

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Tips

Do you want to install a fresh version of Windows 10 on your PC, or downgrade from Windows 11 to Windows 10? If you're running another operating system or setting up a new PC, you can easily install Windows 10 from an installation disc or USB flash drive. It is impossible to downgrade from Windows 11 to Windows 10 directly, so a fresh installation of Windows 10 is needed if you already have Windows 11. Upgrading from an earlier version like Windows 7 or 8.1 is much easier—no flash drive or DVD required! This wikiHow article will walk you through installing or upgrading to Windows 10 on any PC.

Quickly Install Windows 10

Download the Windows Installation Media creation tool from the official Microsoft website.
Insert a blank USB drive and run the installation tool.
Follow the prompts to create a Windows installation media.
Boot your PC from the Windows Installation Media and follow the prompts to install Windows.

Part 1

Part 1 of 4:

Getting What You Need

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1
Understand that support for Windows 10 has ended. As of October 14, 2025, Microsoft has ended support for Windows 10. This means that Windows 10 computers will no longer receive free software updates, security fixes, or technical support. This may leave your PC more vulnerable to security threats and malware. For improved security, consider upgrading to Windows 11.^{[1]
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- You can download the PC Health Check application by clicking here to see if your PC is compatible with Windows 11.
- The instructions to download Windows 10 and 11 are nearly identical.
2
Find your Windows 10 edition and PC architecture. You’ll need this information to figure out which version of Windows 10 to install. Click the Windows Start menu and type “About PC.” Click the About PC option. Check your computer’s architecture next to “System type” (i.e., 32-bit or 64-bit). Then check what edition of Windows 10 you have next to “Edition” below “Windows specifications.”

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Make sure you have a product key. If you bought Windows 10 through Microsoft using your Microsoft account, your product key is already linked to your account. Suppose you bought Windows 10 from another retailer. In that case, you'll have a 25-character product key that you'll need to have handy to activate Windows.^{[2]
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- If you don't have a product key or you're installing Windows 10 on a new hard drive, make sure you've linked your Windows 10 digital license to your Microsoft account before you start the installation.^{[3]
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  Go to source} Head to Settings > Update & Security > Activation from the current installation—if the activation status says Windows is activated with a digital license, click Add an account and follow the on-screen instructions to link your Microsoft account.
- If you're upgrading from an earlier version and your PC qualifies for a free upgrade, you won't need a product key.
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Get a blank USB flash drive or a burnable DVD. You can create a Windows Installation Media using a blank USB flash drive or a writable DVD. You need at least 8 GB of hard drive space on a blank USB drive.
- If there is any data stored on the USB flash drive you select, it will be erased. Back up any data you want to keep.

Part 2

Part 2 of 4:

Creating a Windows Installation Media

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1
Connect a blank USB flash drive or insert a blank writable DVD. You can install Windows 10 by creating a bootable USB flash drive or DVD that contains the Windows 10 installation files. You'll need a USB flash drive that's at least 8GB, or any blank DVD to get started.^{[4]
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- If you already have Windows 10 installed on the PC and just want to reinstall it, it'll be easiest to reinstall it from within Windows 10 instead of creating installation media.
- If you want to upgrade from Windows 7 or Windows 8.1, you won't need to create an installation disc or drive. However, you will need to follow most of this method to start the upgrade.
Go to the Windows 10 download page. This is the official download site for Windows 10.
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Click Download Now. This is a blue button below the “Create Windows 10 Installation media” header.
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Double-click the downloaded file. Its name begins with "MediaCreationTool" and ends with ".exe." You'll find it in your default download folder, which is usually called Downloads.
- Click Yes when prompted to allow the installer to run.
It's in the bottom-right corner of the window. Read through the license terms and click Accept to accept them.
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Select "Create installation media" and click OK. This option lets you create a Windows installation disc or drive that will work on any compatible PC, not just the one you're using now.
- If you're updating your PC from an earlier version of Windows, select Upgrade this PC now instead, and then follow the on-screen instructions to install Windows 10. You're done!
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Select what version of Windows 10 you want to install and click Next. Use the drop-down menus to select your language, which edition of Windows 10 you want to install, and your PC architecture.
- If you’re downgrading from Windows 11, make sure you select the Windows 10 Edition that you already had installed.
- If you're not sure about the architecture, you can choose Both from the menu.
- If you are installing Windows 10 on the current PC you are using, you click the checkbox next to “Use the recommended options for this PC” to automatically detect which version of Windows you have installed.
An ISO file is a type of file that can be burned to a DVD, so choose that option if you plan to create a DVD. Otherwise, choose the USB flash drive option.
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Create your installation media. The steps are a little different depending on what you're doing. Select one of the following options and follow the instructions:^{[5]
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- Flash drive: Select this option and then select your flash drive from the list, click Next, and wait for the installation files to install. When the process is complete, click Finish.
- ISO File: Select this option and click Save to save the ISO file to your computer—it may take a while because the file is large and has to be downloaded. Once downloaded, you'll see a progress screen that monitors the download. When the download is complete, click Open DVD burner on the "Burn the ISO file to a DVD" screen, select your DVD burner, and then click Burn to create your DVD.

Part 3

Part 3 of 4:

Booting from Windows 10 Installation Media

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If you created a flash drive, connect it to the PC on which you want to install Windows 10. If you made a DVD, insert it into the drive now.
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Boot the PC into the BIOS. If your PC is not already set up to boot from your flash or optical drive, rebooting from your installation media won't work. You'll need to make a quick change in your BIOS to change the boot order. There are a few ways to get in:^{[6]
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- Windows 8.1 or 10: From Windows, open Settings, select Update & Recovery or Update & Security, and go to Recovery > Restart now > Troubleshoot > Advanced Options > UEFI Firmware Settings > Restart.
- Any PC: Reboot the PC and immediately start pressing (over and over again) the keyboard key required by your PC to enter "Setup," or the BIOS. The key varies by computer, but here are some of the most common keys:^{[7]
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  - Acer and Asus: F2 or Del
  - Dell: F2 or F12
  - HP: ESC or F10
  - Lenovo: F1, F2, or Fn + F2
  - Lenovo ThinkPads: Enter + F1.
  - MSI: DEL
  - Microsoft Surface Tablets: Press and hold the volume-up button.
  - Samsung and Toshiba: F2
  - Sony: F1, F2, or F3
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Go to the Boot tab. You'll use the arrow keys to select it.
- The Boot tab may instead say Boot Options or Boot Order, depending on your computer's manufacturer.
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Select a device from which to boot. You have a couple of options here:
- For a USB flash drive, select the Removable Devices option.
- For a disc installation, select the CD-ROM Drive or Optical Drive option.
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Press the + key until your boot option is first. Once either Removable Devices or CD-ROM Drive is at the top of the list, your computer will select your choice as its default boot option.
- On some computers, you'll instead press one of the function keys (e.g., F5 or the arrow keys) to navigate an option up to the top of the menu. The key will be listed on the right side of the screen.
You should see a key prompt (e.g., F10) at the bottom of the screen that correlates to "Save and Exit". Pressing it will save your settings and restart your computer.
Once your computer finishes restarting, you'll see a window here with your geographical data. You're now ready to begin setting up your Windows 10 installation.

Part 4

Part 4 of 4:

Installing Windows 10

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1
Boot your PC from the bootable drive. If your PC doesn’t reboot from the BIOS, power off your PC. Make sure you have your Windows Installation Media flash drive or DVD inserted. Power on your PC.
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Select your language, currency, and keyboard input and click Next. Use the drop-down menu to select your language, currency, and keyboard input. Then select Next.
It's in the middle of the window.
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Enter your Windows 10 key, then click Next. If you don't have a Windows 10 key, instead click Skip in the bottom-right corner of the screen.
- If you've already installed Windows 10 on this PC and were signed in with your Microsoft account, your key should be linked to your account. When prompted, just sign in with your Microsoft account, and Windows will locate your key.^{[8]
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- If you've changed hardware in the PC, such as replacing the motherboard, you can activate Windows after installing by going to Settings > Update & Security > Activation > Troubleshoot > I changed hardware on this device recently. Sign in with your Microsoft account when prompted, choose This is the device I'm using right now, and then click Activate.
- If you don’t have your Windows product key, you can click I don’t have a product key at the bottom of the screen. You will need to obtain a product key to gain full access to all of Windows’ features.
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Select your Windows edition and click Next. Make sure you select the correct Windows 10 edition that you have purchased or previously owned. Then click Next at the bottom of the screen.
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Select the drive you want to install Windows on and click Next. If you have more than one hard drive or more than one partition, select the drive you want to install Windows on. You should select your “C: Drive” or “Drive 0 Unallocated space.” Windows will start installing.
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Follow the on-screen instructions to install Windows 10. You'll be asked to perform a few tasks, such as connecting to Wi-Fi, choosing your country or region, and so forth. Once the installation is complete, you'll have a fresh new installation of Windows 10.^{[9]
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- If you're upgrading from an earlier version of Windows, you'll be asked if you want to upgrade the current operating system or do a custom install. If you choose Upgrade, you'll preserve existing apps and files.

Community Q&A

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Question

Will I lose my data if I reinstall Windows 10?

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Based on step 5 above, when it prompts "Which type of installation do you want?", you should select "Upgrade" to keep your files and settings. If you select "Custom", you will have a clean installation and all of the files and settings of your previous version of Windows will be cleaned.

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What button do I press for boot options?

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This is commonly F12, but can vary, depending on manufacturer. Your system will tell you which key to press upon first turning on the machine.

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My laptop has the key embedded in its motherboard, so do I need to enter it again?

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It should detect the key if it's on your motherboard. If not, you can re-enter the key.

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If you don't enter a Windows 10 activation key when prompted to do so, you'll receive a free trial of Windows 10. After the trial ends, you'll be prompted to purchase and enter an activation key.

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