You can attempt to install Windows 11 without TPM 2.0 by using a documented setup bypass, but first check whether your PC already has a firmware TPM that is turned off. A bypass skips installation checks; it does not make unsupported hardware compatible or guarantee updates. Microsoft does not support installations on ineligible devices.
Check for a firmware TPM first
A PC that reports no TPM may have one disabled in firmware. Before choosing a bypass:
- Press Windows + R, enter
tpm.msc, and check whether Windows detects a compatible TPM. This is the quickest check described for identifying TPM status. - If Windows does not detect one, open your PC’s BIOS or UEFI settings and look for a firmware TPM option. The labels may include Intel PTT or AMD fTPM.
- If you find the option, enable it and check the rest of Windows 11’s requirements before trying setup again. A firmware TPM may remove the need to bypass the TPM check, but the other requirements still apply.
A Trusted Platform Module (TPM) is a security component. Microsoft lists TPM 2.0 as a Windows 11 minimum requirement, alongside a compatible 64-bit processor on its approved list, running at 1 GHz or faster with at least two cores; 4 GB of RAM; 64 GB of storage; and UEFI firmware that is Secure Boot capable. The requirements also include DirectX 12 or later graphics with a WDDM 2.0 driver, plus a display larger than 9 inches diagonally with at least 720p resolution and 8 bits per color channel.
Choose a route for the type of installation
The Registry route described by ProfesionalReview is for a clean installation. Its Rufus route covers both a clean install from bootable media and an in-place upgrade launched from Windows 10. Choose based on what you intend to do, not just on which check is stopping setup.
| Route | Installation type | Main consideration |
| LabConfig Registry values | Clean installation from bootable Windows 11 media | Creates four setup-bypass values in the Registry; back up data before installing. |
| Rufus-created USB, booted from the drive | Clean installation | The described USB must be at least 8 GB, and Rufus formats it. |
| Rufus-created USB, opened in Windows 10 | In-place upgrade | Run setup.exe from the USB in File Explorer rather than booting from the drive. |
For a clean install: the LabConfig route
ProfesionalReview describes creating the HKEY_LOCAL_MACHINE\SYSTEM\Setup\LabConfig key during Windows Setup, then adding four DWORD (32-bit) values and setting each to 1:
BypassTPMCheckBypassSecureBootCheckBypassRAMCheckBypassCPUCheck
This route is scoped to a clean installation. It bypasses the named setup checks; it does not add RAM, change firmware, or supply processor capabilities the computer lacks. Back up important files before a clean installation.
For an in-place upgrade: use the described Rufus route
ProfesionalReview describes using Rufus to prepare a Windows 11 USB installer with selected checks removed. Its guide specifies a USB drive of at least 8 GB and warns that the drive will be formatted, so copy off any files you need first. For an in-place upgrade from Windows 10, open the prepared USB in File Explorer and run setup.exe; do not boot from the USB for this route.
That is the route the guide describes for an in-place upgrade, rather than its LabConfig clean-install method. The procedure does not make the resulting installation eligible for Microsoft support.
A separate route using AnyBurn
BTH’s tutorial, published October 22, 2025, describes another in-place upgrade method: use Windows 10 installation media as a base, replace its install.wim file with the Windows 11 image using AnyBurn, then run setup. The tutorial is specifically about upgrading to Windows 11 25H2 without a flash drive; it does not establish that the method will work on other PCs.
What a bypass cannot change
A setup bypass can skip a requirement check, but it cannot supply a processor instruction the CPU does not have. Ars Technica reported that Windows 11 24H2 will not run on processors without SSE 4.2. That finding applies to 24H2; it is not a general rule for every Windows 11 release.
Microsoft’s support and recovery terms
Microsoft says it does not support Windows 11 installations on devices that do not meet the minimum requirements. The company warns of possible compatibility problems or malfunctions and says updates, including security updates, are not guaranteed. Its unsupported-device guidance also says manufacturer warranties do not cover damage caused by incompatibility.
If an unsupported upgrade causes problems, Microsoft recommends using the Go back option if it is still available. That recovery option is available for 10 days after an upgrade. It does not restore ordinary Windows 10 support: Microsoft says Windows 10 support ended on October 14, 2025, after which it no longer provides free Windows Update software updates, technical assistance, or security fixes for Windows 10.
