Here’s when to use these instructions:

• You have a licence to install Windows 10 and are upgrading this PC from Windows 7 or Windows 8.1.
• You need to reinstall Windows 10 on a PC you’ve already successfully activated Windows 10.

If you are installing Windows 10 on a PC running Windows XP or Windows Vista, or if you need to create installation media to install Windows 10 on a different PC, see  Using the tool to create installation media (USB flash drive, DVD or ISO file) to install Windows 10 on a different PC  section below.

Note: Before you install Windows 10, check to make sure your PC meets the  system requirements  for Windows 10. We also recommend going to the PC manufacturer's website for any additional info about updated drivers and hardware compatibility.

1. Select  Download tool and select Run. You need to be an administrator to run this tool.
2. On the  Licence terms  page, if you accept the licence terms, select Accept.
3. On the What do you want to do? page, select Upgrade this PC now and then select Next.

4. After downloading and installing, the tool will walk you through how to set up Windows 10 on your PC. All Windows 10 editions are available when you select Windows 10, except for Enterprise edition. For more information on Enterprise edition, go to the  Volume Licensing Service Centre.

   • If you don't have a licence to install Windows 10 and have not yet previously upgraded to it, you can purchase a copy here:  get-windows-10
   • If you previously upgraded to Windows 10 on this PC and you’re reinstalling it, you don’t need to enter a product key. Your copy of Windows 10 will automatically activate later using your digital licence.

1. When Windows 10 is ready to install, you’ll see a recap of what you’ve chosen and what will be kept through the upgrade. Select  Change what to keep to set whether you would like to Keep personal files and apps, or Keep personal files only or choose to keep Nothing during the upgrade.
2. Save and close any open apps and files you may be running, and when you’re ready, select  Install.
3. It might take some time to install Windows 10, and your PC will restart a few times. Make sure you don’t turn off your PC.

Follow these steps to create installation media (USB flash drive or DVD) you can use to install a new copy of Windows 10, perform a clean installation or reinstall Windows 10.

Before you download the tool make sure you have:

• An internet connection (internet service provider fees may apply).
• Sufficient data storage available on a computer, USB or external drive for the download.
• A   blank  USB flash drive with at least  8GB of space or blank DVD (and DVD burner) if you want to create media. We recommend using a blank USB or blank DVD because any content on it will be deleted.
• When burning a DVD from an ISO file, if you are told the disc image file is too large you will need to use Dual Layer (DL) DVD Media.

Check a few things on the PC where you want to install Windows 10:

• 64-bit or 32-bit processor (CPU). You’ll create either a 64-bit or 32-bit version of Windows 10. To check this on your PC, go to  PC info in PC settings or  System  in Control Panel, and look for  System type.
• System requirements. Make sure the PC meets the  system requirements  for Windows 10. We also recommend going to the PC manufacturer's website for additional info about updated drivers and hardware compatibility.
• Language in Windows. You'll need to choose the same language when you install Windows 10. To see which language you're currently using, go to  Time and language  in PC settings or  Region  in Control Panel.
• Edition of Windows. You should also choose the same edition of Windows. To check what edition you're currently running, go to  PC info  in PC settings or System  in Control Panel and look for  Windows edition. Windows 10 Enterprise isn’t available in the media creation tool. For more info, go to the  Volume Licensing Service Centre.
• Microsoft Office products. If you just purchased a new device that includes Office 365, we recommend redeeming (installing) Office before upgrading to Windows 10. To redeem your copy of Office, please see  Download and install Office 365 Home, Personal or University on your PC. For more information, check  How to upgrade to Windows 10 on new devices that include Office 365.

If you have Office 2010 or earlier and choose to perform a clean install of Windows 10, you will need to locate your Office product key. For tips on locating your product key, check  Find your Office 2010 product key  or  Enter the product key for your Office 2007 program.

Using the tool to create installation media:

1. Select  Download tool now and select  Run. You need to be an administrator to run this tool.
2. If you agree to the licence terms, select  Accept.
3. On the  What do you want to do?  page, select Create  installation media for another PC, and then select  Next.

4. Select the language, edition and architecture (64-bit or 32-bit) for Windows 10. This table will help you decide which edition of Windows 10 you’ll choose:

   Your current edition of Windows	Windows 10 edition
   Windows 7 Starter Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Ultimate Windows 8/8.1 Windows 8.1 with Bing Windows 8 Pro Windows 8.1 Pro Windows 8/8.1 Professional with Media Centre Windows 8/8.1 Single Language Windows 8 Single Language with Bing Windows 10 Home Windows 10 Pro	Windows 10
   Windows 8/8.1 Chinese Language Edition Windows 8 Chinese Language Edition with Bing	Windows 10 Home China​

 

5. Select which media you want to use:
   • USB flash drive. Attach a blank USB flash drive with at least 8GB of space. Any content on the flash drive will be deleted.
   • ISO file. Save an ISO file to your PC, which you can use to create a DVD. After the file is downloaded, you can go to location where the file is saved or select  Open DVD burner, and follow the instructions to burn the file to a DVD. For more info about using an ISO file, see  Additional methods for using the ISO file to install Windows 10  section below.
6. After the installation media is created, follow the steps below to use it.

7. After completing the steps to install Windows 10, please check that you have all the necessary device drivers installed. To check for updates now, select the Start button, and then go to Settings > Update & Security > Windows Update and select Check for updates. You may also wish to visit your device manufacturer’s support site for any additional drivers that may be needed.

   Note: Drivers for Surface devices may be found on the  Download drivers and firmware for Surface  page.

   Using the installation media you created (click to show more or less information)

   Before you install Windows 10, it’s a good idea to save any work and back up your PC before you start. If you used the media creation tool to download an ISO file for Windows 10, you’ll need to burn it to a DVD before following these steps.

   1. Attach the USB flash drive or insert the DVD on the PC where you want to install Windows 10.
   2. Restart your PC.

      If your PC does not automatically boot to the USB or DVD media, you might have to open a boot menu or change the boot order in your PC's BIOS or UEFI settings. To open a boot menu or change the boot order, you'll typically need to press a key (such as F2, F12, Delete or Esc) immediately after you turn on your PC. For instructions on accessing the boot menu or changing the boot order for your PC, check the documentation that came with your PC or go to the manufacturer's website. If you do not see the USB or DVD media device listed within the boot options, you may need to reach out to the PC manufacturer for instructions for temporarily disabling Secure Boot in your BIOS settings.

      If changing the boot menu or order doesn't work, and your PC immediately boots into the OS you want to replace, it is possible the PC had not fully shut down. To ensure the PC fully shuts down, select the power button on the sign-in screen or on the Start menu and select Shut down.

   3. On the  Install Windows  page, select your language, time and keyboard preferences, and then select Next.
   4. Select  Install Windows.

    

   Additional methods for using the ISO file to install Windows 10 (click to show more or less information)

   If you downloaded an ISO file for Windows 10, the file is saved locally at the location you selected. If you have a third-party DVD burning program installed on your computer that you prefer to use for creating the installation DVD, that program might open by going to the location where the file is saved and double-clicking the ISO file, or right-click the ISO file, select  Open with  and choose your preferred DVD burning software.

   If you want to use the Windows Disk Image Burner to create an installation DVD, go to the location where the ISO file is saved. Right-click the ISO file and select  Properties. On the General tab, click  Change  and select Windows Explorer for the program you would like to use to open ISO files and select  Apply. Then right-click the ISO file and select  Burn disc image.

   If you want to install Windows 10 directly from the ISO file without using a DVD or flash drive, you can do so by mounting the ISO file. This will perform an upgrade of your current operating system to Windows 10.

   To mount the ISO file:

   1. Go to the location where the ISO file is saved, right-click the ISO file and select  Properties .
   2. On the General tab, click  Change … and select Windows Explorer for the program you would like to use to open ISO files and select  Apply.
   3. Right-click the ISO file and select  Mount.
   4. Double-click the ISO file to view the files within. Double-click  setup.exe  to start Windows 10 setup.