You've purchased a Windows 11 Pro license and want to know how to install it? This guide covers all three delivery formats offered by AllKeyMasters: digital key (ESD), DVD, and USB.
Prepare before launching the installer
A successful Windows installation starts before the first reboot. Back up important files, check hardware compatibility, keep your Microsoft account details ready and make sure the connection is stable.
For a work computer, also list the essential tools to reinstall afterwards: office suite, browser, VPN, printers, business software and cloud access.
- Back up documents and browser favorites.
- Check TPM 2.0, Secure Boot, RAM and available storage.
- Prepare the product key and installation media.
- Download network drivers if the PC is older.
Clean install or upgrade?
An upgrade keeps files and settings, but can preserve old issues. A clean install starts fresh and often gives a more stable system, provided you prepare properly.
For a new PC or a machine with many accumulated problems, a clean install is usually better. For a production workstation, an upgrade can be faster if the backup is complete.
Method 1: Installation via Digital Key (ESD)
The digital key is the fastest and most common format. Here's how to proceed:
Step 1: Download the Windows 11 Creation Tool
- Go to microsoft.com/software-download/windows11
- Click "Download Now" under "Create Windows 11 Installation Media"
- Run MediaCreationTool and accept the terms
Step 2: Choose Installation Type
- In-place upgrade: keeps your data, apps, and settings. Ideal when migrating from Windows 10.
- Clean install: formats the drive and installs a fresh Windows. Recommended for a new PC or new drive.
Step 3: Activate Windows 11 with Your Key
- During installation, enter your 25-character product key when prompted
- Or activate after installation: Settings → System → Activation → Change product key
- Activation happens automatically over the internet via Microsoft's servers
Method 2: Installation via DVD
If you opted for the DVD format, here's how to boot from the disc:
- Insert the Windows 11 DVD into the optical drive
- Restart your PC and access BIOS/UEFI (F2, F12, or Del depending on your manufacturer)
- In boot settings, set the DVD drive as first priority
- Save and restart - the Windows installer launches automatically
- Follow the wizard and enter your product key when prompted
Method 3: Installation via USB
The USB format is identical to DVD but faster. The USB drive is bootable - simply:
- Connect the USB drive to your PC
- Restart and access the boot menu (F12 on most PCs)
- Select the USB drive as boot device
- Follow the Windows 11 installation wizard
- Enter your 25-character license key
FAQ: Common Installation Issues
PC doesn't boot from DVD/USB
Check that Secure Boot is configured correctly in BIOS and that you're selecting the right device in the boot menu (usually F12 at startup).
"This product key doesn't work" message
Make sure you're installing the correct edition (Pro or Home) matching your license. A Pro key cannot activate a Home edition and vice versa.
Activation fails
Ensure you're connected to the internet. If the problem persists, it is usually a KMS/Volume issue from a key bought elsewhere; a valid Retail license should activate normally online.
Conclusion
Installing Windows 11 is straightforward regardless of the format. The digital key (ESD) is the fastest method, while DVD and USB are ideal for multiple installs or unstable internet connections.
Go straight to Windows 11 Pro and keep the Windows hub handy for final compatibility checks.