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Installing Windows 11 Without TPM 2.0 – Unsupported Method Using Rufus
- This installation method is not officially supported by Microsoft.
- It is used when a PC does not meet the minimum requirements for Windows 11 (for example, no TPM 2.0).
- There is no guarantee that all updates will be delivered – Microsoft can restrict or suspend updates for unsupported devices.
- You may experience compatibility, stability, and security issues.
- Microsoft may display a watermark or notice on such devices indicating that the system requirements are not met.
- Only proceed with this method after creating a complete backup of your data.
- For important or business PCs, use supported hardware instead.
- Use is entirely at your own risk.
What is this about?
Windows 11 normally requires a security chip called TPM 2.0 (Trusted Platform Module), Secure Boot (a firmware-level startup protection), and at least 4 GB of RAM. Older PCs sometimes don't meet these requirements. When creating the installation USB drive, Rufus offers an option that lets you skip these checks, allowing Windows 11 to be installed on such hardware anyway.
It's important to understand this correctly: this option affects only the hardware check. It has nothing to do with the license or activation. A valid Windows license is still required, and a license cannot "fix" a missing hardware requirement. There is also no guarantee that a system installed this way will remain stable long-term or receive all updates.
What you'll need
- A USB drive with at least 8 GB of storage (its contents will be erased).
- The official Windows 11 ISO from Microsoft (not a modified ISO).
- The Rufus application from rufus.ie or github.com/pbatard/rufus.
- A valid Windows license matching the edition you install.
- A complete backup of the target PC.
Before you start
- Create a complete backup of all important data – this step is especially important for an unsupported installation.
- Use the PC Health Check app to see exactly which requirement is missing – it may be possible to enable it in the firmware.
- Copy off any data from the USB drive you plan to use with Rufus (it will be wiped).
- Download important drivers (network, Wi-Fi, storage controller) from the device manufacturer beforehand.
- Have your license information ready and keep laptops plugged into a power source.
Step by step with Rufus
1Download the official Windows 11 ISO
Download the ISO only from the official page microsoft.com/de-de/software-download/windows11. Do not use a modified ISO from third-party sources.
2Download Rufus from rufus.ie and launch it
Download Rufus only from rufus.ie or github.com/pbatard/rufus. Then launch the application.
3Select the USB drive
Plug in the drive and select it in the "Device" field. Double-check that it's the correct drive – its entire contents will be erased.
4Select the ISO file
Click Select and choose the downloaded Windows 11 ISO. Rufus will then suggest suitable default settings (typically GPT and UEFI).
5Start the creation process
Click Start. Rufus will warn you that all data on the USB drive will be erased, and will then open an additional options window.
6Remove the requirements in the "Windows User Experience" window
Rufus displays the "Windows User Experience" window. There – only if the option is available in your version – enable the current setting to remove the requirements for TPM 2.0, Secure Boot, and 4 GB+ RAM. In many versions it reads something like "Remove requirement for 4GB+ RAM, Secure Boot and TPM 2.0". Note: the exact wording and available options can vary depending on the Rufus version. If no such option is present, this unsupported method cannot be carried out with your version.
7Finish creating the drive
Confirm the window and wait for Rufus to finish creating the drive. Rufus will then show "Ready".
8Boot from the USB drive
Plug the drive into the target PC, open the boot menu (the key varies by manufacturer, often F12, F9, Esc, or Delete), and select the USB drive in UEFI mode.
9Install Windows 11
Follow the setup wizard: choose your language and keyboard, enter a product key or use a stored digital license, and select the installation type. Since the hardware check is skipped via the USB drive, the message "This PC can't run Windows 11" should no longer appear.
10Install drivers and updates
After the first boot, open Settings → Windows Update and install any available updates. Add any missing drivers from the device manufacturer. Keep in mind that updates are not guaranteed on unsupported hardware.
Common problems and solutions
| Problem | Cause and solution |
|---|---|
| The option to remove the requirements is missing | Your version of Rufus doesn't offer this option, or names it differently. Check rufus.ie to see if a newer version is available. Without this option, the unsupported method isn't possible. |
| "This PC can't run Windows 11" still appears | The drive was created without the option enabled, or it wasn't booted in UEFI mode. Recreate the drive with the option enabled and boot in UEFI mode. |
| "No drives were found" | The storage controller driver is missing (for example, Intel RST/VMD). Use "Load driver" to load the driver from the PC or motherboard manufacturer (not from Microsoft). |
| Updates aren't arriving | On unsupported hardware, Microsoft can restrict updates. There's no guarantee here; this is a known risk of this method. |
| "System requirements not met" watermark | This is an expected notice on unsupported hardware. It doesn't directly affect usage, but it does indicate the unsupported status. |
We cover further errors in our guide Fixing installation errors.
After installation
- Open Windows Update and install any available updates (no guarantee of updates).
- Check Device Manager for missing drivers and download them from the manufacturer.
- Check the activation status under Settings → System → Activation.
- Keep a backup on hand in case the system becomes unstable.
- Monitor whether stability and security are adequate – if not, revert to your previous system.
Reverting to your previous system
If your unsupported Windows 11 installation causes problems, you can revert:
- Right after an upgrade: Via Settings → System → Recovery → "Go back", you can often switch back to your previous Windows version within the timeframe allowed by Microsoft, provided the old files are still present.
- Via your backup: Restore your backed-up system or data. This is exactly why a complete backup before starting is so important.
- Clean install of a supported system: Perform a fresh, clean installation of a Windows version that matches your hardware.
Activation
Activation works the same regardless of this method: via a valid product key or a digital license linked to your Microsoft account. The installed edition must match the license. Skipping the hardware check has no effect on activation and does not replace a license. To be clear once more: this is an unsupported hardware installation and not a license or activation bypass.
Frequently asked questions (FAQ)
Is this method legal?
Will I still receive updates?
Is this safe and stable in the long run?
What if the Rufus option is missing?
Will a watermark appear?
Can I switch back later?
Can a purchased license make the hardware compatible?
Matching licenses
A valid license is always required. You'll find the matching editions in our shop.
More guides
The guide covering all methods and editions at a glance.
The regular, supported method using Rufus and the official ISO.
Enable TPM and Secure Boot, and boot from a USB drive.
Solutions for the most common error messages during installation.
Sources
- Windows 11 system requirements: https://www.microsoft.com/de-de/windows/windows-11-specifications
- Download Windows 11 (Microsoft): https://www.microsoft.com/de-de/software-download/windows11
- Installing Windows 11 (Microsoft Support): https://support.microsoft.com/de-de/windows/windows-11-installieren
- Enabling TPM 2.0: Microsoft Support
- Secure Boot: Microsoft Support
- Rufus – official website: https://rufus.ie
Last updated: July 2026
