Are you looking to install a fresh version of Windows 10 or downgrade from Windows 11 to Windows 10? Whether you’re setting up a new PC or switching from another operating system, the process is straightforward with a bootable installation USB or DVD. Note that downgrading from Windows 11 to Windows 10 isn’t possible directly; a clean installation of Windows 10 is required. Upgrading from Windows 7 or 8.1 is simpler and doesn’t require a flash drive or DVD. This guide will walk you through the installation or upgrade process to Windows 10.
Step 1: Prepare the Installation Media
Start by connecting a blank USB flash drive (at least 8GB in size) or inserting a blank writable DVD. You’ll use this media to create a bootable installation drive for Windows 10.

If you’re already running Windows 10 on your PC and just need to reinstall it, it’s easier to do this from within the operating system instead of creating a new installation media. For those upgrading from Windows 7 or 8.1, you can skip creating the installation media, though most of this process still applies.
Step 2: Ensure You Have a Product Key
Before beginning the installation, ensure you have a Windows 10 product key. If you purchased Windows 10 through your Microsoft account, your key is already linked to your account. If you bought it from another retailer, you should have a 25-character product key ready for activation.

If you’re upgrading from an earlier version and are eligible for a free upgrade, a product key will not be necessary. Additionally, make sure to link your Windows 10 digital license to your Microsoft account if you haven’t already.
Step 3: Download the Media Creation Tool
Head over to Microsoft’s Software Download page and download the Media Creation Tool by clicking on the “Download tool now” button.

Step 4: Run the Media Creation Tool
Once downloaded, double-click the MediaCreationTool file to launch it. You’ll find the file in your default download folder (usually called Downloads). Click “Yes” when prompted to allow the tool to run.


Step 5: Accept the License Agreement
After launching the tool, click “Accept” to agree to the license terms.

Step 6: Create Installation Media
Choose the “Create installation media” option and click “Next.” This will allow you to create a Windows 10 installation disc or USB flash drive. If you’re simply upgrading, select “Upgrade this PC now” instead and follow the on-screen instructions.

Step 7: Choose Preferences
Select your language, edition, and architecture (64-bit or 32-bit) preferences. If you’re unsure, select “Both” for the architecture option.

Step 8: Choose Your Installation Type
Select either the USB flash drive or ISO file (for DVD installation) option, depending on your chosen media type. Click “Next.”

Step 9: Create the Installation Media
If you selected a USB drive, choose your flash drive and click “Next” to begin the process. Wait for the installation files to load, then click “Finish” when done. If you selected an ISO, save the file to your computer and burn it to a DVD.

Step 10: Insert the Installation Media into the Target PC
Insert your USB flash drive or DVD into the PC where you want to install Windows 10.

Step 11: Boot from the Installation Media
You will need to access your PC’s BIOS settings to ensure it boots from the USB or DVD. Reboot your computer and press the key to enter BIOS setup (usually F2, F12, ESC, or DEL depending on your PC).
- 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:
- 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
Then, go to the “Boot” tab and select your installation media as the first boot option.




Step 12: Save Settings and Restart
Save the changes and exit BIOS. Your PC will now boot from the USB or DVD, and you will see the Windows installation screen.


Step 13: Start the Installation Process
Click “Next” when prompted. If necessary, change the language or other settings before continuing. Then, click “Install Now” to start the installation process.


Step 14: Enter Product Key
If prompted, enter your Windows 10 product key. If you don’t have one, click “Skip,” and Windows will activate once installed using your Microsoft account credentials.

Step 15: Follow On-Screen Instructions
Follow the on-screen instructions to customize your Windows 10 settings, connect to Wi-Fi, and choose preferences. When the installation is complete, you’ll have a fresh installation of Windows 10.

If you were upgrading, you will be asked whether to keep your apps and files or perform a custom install. Choose “Upgrade” to preserve your data and apps.
