How to Install Windows 11 on Unsupported Hardware (Without TPM & Secure Boot)?

To do it, use the command prompt on the Windows 11 setup screen:

1. Run the Registry Editor regedit.exe.
2. Go to HKEY_LOCAL_MACHINE\SYSTEM\Setup registry key and create a new key with the name LabConfig;
3. Create reg DWORD parameters with values 1 for those compatibility checks you want to skip during installation.

The following bypass options are available for installing Windows 11 on unsupported hardware:

• BypassCPUCheck – for incompatible CPUs
• BypassTPMCheck – without a TPM 2.0+ chip
• BypassRAMCheck – to skip minimum RAM check
• BypassSecureBootCheck – for Legacy BIOS devices (or UEFI firmware with Secure Boot disabled)
• BypassStorageCheck – to minimal bypass system drive size check

For example, in order not to check the TPM module during installation, create the BypassTPMCheck registry parameter with the value 1. You can do it using the graphical Registry Editor or with the command:

reg add HKLM\SYSTEM\Setup\LabConfig /v BypassTPMCheck /t REG_DWORD /d 1

In the same way, create other registry parameters for the checks you want to skip when installing Windows 11.

Then get back to Windows 11 setup window, go one step back, and continue with a typical Windows installation without compatibility checks.

You can modify Windows 11 installation ISO image so that all checks (TPM, SecureBoot, disk size, RAM, CPU) are skipped during OS installation. To do it, create a text file AutoUnattend.xml with the following contents:

<unattend xmlns="urn:schemas-microsoft-com:unattend">
<settings pass="windowsPE">
<component name="Microsoft-Windows-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<RunSynchronous>
<RunSynchronousCommand wcm:action="add">
<Order>1</Order>
<Path>reg add HKLM\System\Setup\LabConfig /v BypassTPMCheck /t reg_dword /d 0x00000001 /f</Path>
</RunSynchronousCommand>
<RunSynchronousCommand wcm:action="add">
<Order>2</Order>
<Path>reg add HKLM\System\Setup\LabConfig /v BypassSecureBootCheck /t reg_dword /d 0x00000001 /f</Path>
</RunSynchronousCommand>
<RunSynchronousCommand wcm:action="add">
<Order>3</Order>
<Path>reg add HKLM\System\Setup\LabConfig /v BypassRAMCheck /t reg_dword /d 0x00000001 /f</Path>
</RunSynchronousCommand>
<RunSynchronousCommand wcm:action="add">
<Order>5</Order>
<Path>reg add HKLM\System\Setup\LabConfig /v BypassCPUCheck /t reg_dword /d 0x00000001 /f</Path>
</RunSynchronousCommand>
<RunSynchronousCommand wcm:action="add">
<Order>4</Order>
<Path>reg add HKLM\System\Setup\LabConfig /v BypassStorageCheck /t reg_dword /d 0x00000001 /f</Path>
</RunSynchronousCommand>
</RunSynchronous>
<UserData>
<ProductKey>
<Key></Key>
</ProductKey>
</UserData>
</component>
</settings>
</unattend>

<component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<OOBE>
<HideOnlineAccountScreens>true</HideOnlineAccountScreens>
<HideWirelessSetupInOOBE>true</HideWirelessSetupInOOBE>
<ProtectYourPC>3</ProtectYourPC>
</OOBE>
</component>

Copy this file to the root of your Windows 11 USB installation media.

If you want to add an answer file to Windows 11 ISO image, extract its contents to any folder on your computer, copy AutoUnattend.xml to the same directory, and rebuild the ISO image.

I used free DISM++ (Toolkit -> ISO maker) to create the custom Windows 11 ISO image.

Then no hardware compatibility checks will be performed during Windows 11 setup.