How to Install Windows 11: The Ultimate Step-by-Step Guide (2025)
Windows 11 brings a fresh design, improved gaming performance with DirectStorage, and better multitasking features. Whether you are upgrading from Windows 10 or building a new PC, installing Microsoft's latest OS is straightforward if you know the right steps.
In this guide, we will cover the three best methods to install Windows 11, how to check if your PC is compatible, and how to bypass common installation errors like TPM 2.0.
Windows 11 System Requirements
Before you begin, it is critical to ensure your hardware meets the minimum requirements. Microsoft has stricter rules for Windows 11 compared to its predecessors.
* Processor: 1 GHz or faster with 2+ cores (64-bit compatible)
* RAM: 4 GB minimum
* Storage: 64 GB or larger
* System Firmware: UEFI, Secure Boot capable
* TPM: Trusted Platform Module (TPM) version 2.0
Pro Tip: Not sure if you qualify? Download the official PC Health Check app from Microsoft’s website to run a quick compatibility test.
Method 1: Upgrade via Windows Update (The Easiest Way)
If you are already running Windows 10, the simplest way to get Windows 11 is through the official automatic update. This keeps all your files and apps intact.
* Click Start and go to Settings (Gear icon).
* Select Update & Security > Windows Update.
* Click Check for updates.
* If your PC is eligible, you will see a banner: "Upgrade to Windows 11 is ready."
* Click Download and install.
* Restart your computer when prompted to finish the setup.
Method 2: Use the Windows 11 Installation Assistant
If your PC is compatible but you aren't seeing the update in Settings yet, you can force the update using the Installation Assistant.
* Visit the Download Windows 11 page on Microsoft’s official site.
* Under the "Windows 11 Installation Assistant" section, click Download Now.
* Run the .exe file and accept the license terms.
* The tool will download the necessary files and prepare your PC.
* Your computer may restart several times during the process. Do not turn it off.
Method 3: Clean Install via USB (Media Creation Tool)
This method is best if you built a new PC or want to wipe your hard drive for a fresh start. You will need a USB flash drive with at least 8GB of space.
Step 1: Create a Bootable USB
* Go to the Microsoft download page and look for "Create Windows 11 Installation Media."
* Download the Media Creation Tool and run it.
* Select USB flash drive when asked for the media type.
* Insert your USB drive and let the tool download Windows 11 onto it.
Step 2: Boot from USB
* Plug the USB drive into the PC you want to upgrade.
* Restart the PC and immediately press the Boot Menu key (usually F12, F2, Esc, or Del, depending on your manufacturer).
* Select your USB drive from the list.
Step 3: Install Windows
* Select your language and time preferences, then click Next.
* Click Install Now.
* When asked for a product key, enter it or click "I don't have a product key" (you can activate it later).
* Choose Custom: Install Windows only (advanced).
* Select the drive where you want to install the OS and click Next. Windows will now install automatically.
Troubleshooting Common Errors
How do I fix the "This PC can't run Windows 11" error?
This usually happens because TPM 2.0 or Secure Boot is disabled in your BIOS.
* To fix: Restart your PC and enter BIOS (usually F2 or Del). Look for "Security" or "Trusted Computing" tabs and enable TPM (sometimes called fTPM or PTT). Also, ensure Secure Boot is set to "Enabled."
Do I need to back up my files?
* For Method 1 & 2: No, your files remain safe, but a backup is always recommended.
* For Method 3: Yes! A clean install wipes everything on the drive. Back up your data to an external drive or cloud storage before proceeding.
Conclusion
Installing Windows 11 is easier than ever, thanks to multiple installation options. For most users, Windows Update is the safest path. However, power users and gamers often prefer a clean install via USB to ensure a bloatware-free experience.
Ready to upgrade? Check your specs, pick your method, and enjoy the new Windows experience today.