Clean Install Windows 11: The Complete 2026 Tutorial

A clean installation of Windows 11 guarantees a fast system, free from superfluous software inherited from an old installation or a botched upgrade. Whether you've just built your PC, changed your SSD, or your current system is showing signs of fatigue, this tutorial guides you from creating the USB drive to the initial settings, step by step.

Before You Begin: The Checklist

A clean installation erases all content on the system disk. So take ten minutes to prepare the ground:

• Back up your data: documents, photos, non-cloud game saves, browser profiles. An external drive or a cloud service will do the trick.
• Note your licenses: if Windows is already activated on the machine, the digital license linked to the motherboard will reactivate automatically. For third-party software, export the keys if necessary.
• Prepare a USB drive of at least 8 GB: it will be formatted during media creation.
• Check the system requirements: TPM 2.0 and Secure Boot enabled in the BIOS. All recent PCs are equipped with them; sometimes you just need to enable them.

Step 1: Create the USB Installation Drive

The official method is also the simplest: Microsoft's Media Creation Tool, downloadable for free from the "Download Windows 11" page on microsoft.com.

• Launch the tool, accept the terms, then choose "Create installation media."
• Leave the recommended language and edition (they correspond to your machine).
• Select your USB drive from the list. Warning: all its content will be erased.
• The tool downloads Windows 11 and makes the drive bootable. Allow 15 to 30 minutes depending on your internet connection.

Alternative: Rufus

The free utility Rufus allows you to create the same drive from an official ISO image, with additional options (disabling certain requirements for older machines, direct local account). For a recent PC, the Media Creation Tool is more than sufficient.

Step 2: Boot from the USB Drive

Plug the drive into a USB port at the back of the PC (directly on the motherboard, more reliable than front ports), then restart.

• On startup, press the boot menu key: usually F11 or F8 on MSI and ASRock motherboards, F12 on Gigabyte, F8 on ASUS. The key is briefly displayed on the screen at startup.
• Select your USB drive in the UEFI version from the list.
• If the drive does not appear, enter the BIOS (Delete or F2 key) and check that UEFI boot is enabled and that CSM is disabled.

Step 3: The Installation Itself

The Windows 11 wizard is well guided, but two screens deserve your attention.

Choosing the Installation Type

Choose "Custom: Install Windows only" and not the upgrade. This choice ensures a truly clean installation.

Partitioning

On the disk selection screen:

• If the disk already contained a system, delete all partitions on the target disk (and only on that one) until you have only unallocated space.
• Select this unallocated space and click Next: Windows will create the necessary partitions itself.
• If you have multiple disks, ideally unplug secondary disks during installation to prevent the bootloader from installing in the wrong place.

The installation then copies the files and restarts several times. Do nothing and remove the USB drive at the first restart if the PC tries to boot from it again.

Step 4: Initial Setup (OOBE)

Windows 11 requires an internet connection and a Microsoft account during setup. Some tips for this phase:

• Take the time to decline telemetry and advertising personalization options that don't interest you: each screen offers a choice.
• The Microsoft account simplifies license reactivation and synchronization, but a local account is still possible depending on the edition and installer version.
• Ignore the subscription offers at the end of the configuration: they can be activated later if needed.

Step 5: Drivers and Updates

This is the step that makes the difference between a decent system and an optimal one.

• Windows Update first: run several cycles of update checks until there is nothing left to install, restarting between each cycle.
• Graphics driver next: download the driver directly from Nvidia (GeForce/Nvidia App) or AMD (Adrenalin) rather than settling for the generic version from Windows Update. This is essential for gaming.
• Chipset: on an AMD platform, install chipset drivers from the AMD website for optimal processor behavior (power management, core scheduling).
• Network and audio: normally covered by Windows Update; otherwise, your motherboard manufacturer's website provides them.

Step 6: Worthwhile Settings

• Enable HDR mode and check the screen refresh rate in Settings > System > Display (a 144 Hz monitor is sometimes configured at 60 Hz by default).
• In power options, switch to High Performance mode on a desktop PC.
• Uninstall pre-installed applications you don't use from Settings > Apps.
• Enable hardware-accelerated GPU scheduling in graphics settings if your card supports it.

Conclusion

A clean installation takes about an hour, including drivers, and restores any machine to its original responsiveness. It's also the best starting point after a major component change like an SSD or a motherboard.

And if you prefer to receive a machine ready to use, DSGate gaming PCs come with Windows 11 cleanly installed, updated drivers, and the system tested before shipping—all that's left is to plug in and play.