How to Install Windows 11 Pro from USB – Step-by-Step Guide

This tutorial shows how to install Windows 11 Professional from a USB flash drive using a clean installation method. Each step is clearly explained, with screenshot placeholders so you can follow along visually.

This method is ideal if you are:

• Installing Windows on a new PC

• Reinstalling Windows 11 Pro

• Fixing boot or system errors

• Upgrading from Windows 10 using a clean install

Requirements Before You Begin

Before starting the installation, prepare the following:

• USB flash drive (8GB or larger)

• Windows 11 Professional ISO or Media Creation Tool

• A compatible PC (TPM 2.0, Secure Boot, 64-bit CPU)

• Backup of important data

Step 1: Create a Bootable Windows 11 USB

Screenshot: Windows 11 Media Creation Tool / Rufus settings

Option 1: Using Media Creation Tool (Recommended)

1. Download the Windows 11 Media Creation Tool

2. Run the tool and accept the license agreement

3. Select Create installation media

4. Choose USB flash drive

5. Wait for the process to finish

Option 2: Using ISO File with Rufus

1. Download the Windows 11 ISO file

2. Open Rufus and select your USB drive

3. Set:

   • Partition scheme: GPT

   • Target system: UEFI

4. Click Start

Step 2: Boot Your PC from USB

Screenshot: Boot Menu screen

1. Insert the bootable USB

2. Restart your PC

3. Press the Boot Menu key (F12 / F11 / ESC / F9)

4. Select UEFI: USB Flash Drive

Step 3: Start Windows 11 Setup

Screenshot: Language and Install Now screen

1. Select Language, Time, and Keyboard layout

2. Click Next

3. Click Install Now

Step 4: Enter Product Key and Select Edition

Screenshot: Product key and edition selection

1. Enter your Windows 11 Pro product key, or click I don’t have a product key

2. Select Windows 11 Pro

3. Click Next

Step 5: Accept License Agreement

Screenshot: License agreement page

1. Check I accept the license terms

2. Click Next

Step 6: Choose Installation Type

Screenshot: Custom installation and partition screen

1. Select Custom: Install Windows only (advanced)

2. For clean install:

   • Delete existing system partitions

   • Select Unallocated Space

3. Click Next

⚠️ All data on the selected drive will be deleted.

Step 7: Installing Windows 11 Professional

Screenshot: Installation progress

• Windows will copy files and install features

• The system will restart automatically

• Do not remove the USB until setup is complete

Step 8: Complete Windows 11 Initial Setup

Screenshot: OOBE setup screens

1. Select your region and keyboard

2. Connect to the internet

3. Sign in with a Microsoft account (or create an offline account)

4. Set up a PIN and privacy options

Step 9: Finish Installation and Update Windows

Screenshot: Windows 11 desktop and update page

1. Open Settings → Windows Update

2. Install all updates

3. Install missing drivers

4. Activate Windows 11 Pro

Final Notes

Installing Windows 11 Pro from USB using a clean installation ensures:

• Better performance

• Fewer errors

• A fresh and secure system