How to Reinstall Windows 11 from BIOS: A Step-by-Step Guide

Reinstalling Windows 11 from BIOS might sound like a complex task, but it’s actually quite straightforward. All you need is a USB drive with the Windows 11 installation media on it, and a bit of time to follow the steps. By the end of this article, you’ll know exactly how to get your computer up and running with a fresh install of Windows 11.

Step by Step Tutorial: Reinstalling Windows 11 from BIOS

Before diving into the steps, it’s important to understand what this process will accomplish. Reinstalling Windows 11 from BIOS will wipe your current operating system and replace it with a new, clean version of Windows 11. This is particularly useful if your computer is experiencing issues that cannot be resolved within the operating system itself.

Step 1: Prepare the Installation Media

Insert a USB drive with the Windows 11 installation files into your computer.

This step is crucial as it ensures that you have the necessary files to install Windows 11. If you don’t have the installation media prepared, you can download the Windows 11 Media Creation Tool from Microsoft’s website and follow the instructions to create a bootable USB drive.

Step 2: Enter BIOS

Restart your computer and enter the BIOS setup utility.

To enter BIOS, you usually need to press a specific key during the boot process, such as F2, F12, DEL, or ESC. The exact key depends on your computer’s manufacturer. Keep an eye on the screen during boot-up for a message indicating which key to press.

Step 3: Change Boot Order

Navigate to the boot order settings in BIOS and set the USB drive as the first boot option.

Changing the boot order allows your computer to start up from the USB drive instead of its internal hard drive. This is necessary for the installation media to run and begin the Windows 11 installation process.

Step 4: Save and Exit BIOS

Save your changes and exit the BIOS setup, allowing your computer to reboot from the USB drive.

Make sure to save the changes you made to the boot order before exiting. Your computer should now boot from the USB drive and begin loading the Windows 11 installation setup.

Step 5: Install Windows 11

Follow the on-screen prompts to install Windows 11.

The installation wizard will guide you through the process. You’ll need to accept the license terms, choose a language and keyboard layout, and select the drive where you want to install Windows 11. Remember that this will erase all data on the selected drive.

After completing the steps above, your computer will proceed with the Windows 11 installation. This can take some time, so be patient. Once the installation is finished, you’ll be prompted to set up your new Windows 11 environment, including creating a user account and customizing settings.

Tips for Reinstalling Windows 11 from BIOS

  • Make sure your computer meets the system requirements for Windows 11.
  • Back up your important files before starting, as the installation will erase all data on the drive.
  • Use a reliable USB drive with at least 8GB of storage for the installation media.
  • Disconnect any unnecessary external devices during the installation process to avoid conflicts.
  • Keep your computer connected to a power source throughout the entire process to prevent any interruptions.

Frequently Asked Questions

What if my computer doesn’t boot from the USB drive?

Ensure that you’ve set the USB drive as the first boot option in BIOS, and that the installation media is properly created and not corrupted.

Can I reinstall Windows 11 without losing my files?

If you perform a clean installation as described in this article, you will lose all data on the drive. To keep your files, you would need to perform an in-place upgrade or back up your files beforehand.

How long does the installation process take?

The time it takes can vary based on your computer’s hardware, but it typically takes between 30 minutes to an hour.

Do I need a product key to reinstall Windows 11?

If you’re reinstalling Windows 11 on a computer that previously had an activated copy, you likely won’t need a product key. Windows should automatically activate once it’s connected to the internet.

What should I do if I encounter errors during the installation?

If you encounter errors, make sure your installation media is not corrupted, your computer meets the system requirements, and there are no hardware issues. If problems persist, seek assistance from Microsoft support or a professional technician.


  1. Prepare the USB installation media.
  2. Enter BIOS setup utility.
  3. Change boot order to prioritize USB drive.
  4. Save changes and exit BIOS.
  5. Follow the Windows 11 installation prompts.


Reinstalling Windows 11 from BIOS might seem like a daunting task, but it’s a valuable skill to have. Whether you’re dealing with system errors, performance issues, or simply want a fresh start, reinstalling your operating system can breathe new life into your computer. By carefully following the steps outlined in this article, you can ensure a smooth and successful installation of Windows 11. Remember to back up your files, be patient, and enjoy the benefits of a clean and efficient operating system. If you encounter any issues or have further questions, don’t hesitate to reach out to tech-savvy friends, online forums, or professional tech support. Happy computing!

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