Install Windows 11 on Legacy Bios: no TPM and Secure Boot

A third-party tool may be the easiest solution

5 min. read

Updated onAugust 5, 2024

updated onAugust 5, 2024

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Key notes

By now, it is no secret that we need TPM 2.0 and Secure Boot to install Windows 11, but we already know that we can enable them from the UEFI BIOS Mode.

However, things get a little complicated if you have a Legacy BIOS because switching to UEFI might get you in trouble and erase your disk, so you might not be OK with that.

And even if you do so, you might still be unable to enable TPM 2.0 because you don’t have the chip on your motherboard.

However, we have a workaround to help you install Windows 11 on Legacy BIOS withoutTPM 2.0and Secure Boot checks.

Before starting the procedure, back up all important data on your drive andcheck the BIOS mode. Although this shouldn’t affect your files, it’s a recommended step before any such tweaking.

Can Windows 11 install without UEFI?

A publicly published standard called the Unified Extensible Firmware Interface details the software protocol for communication between an OS and the platform’s firmware.

The UEFI is an integral element in the new OS, and it is officially required for a smooth installation of Windows 11.

However, to install Windows 11, even if your PC or laptop doesn’t have the necessaryhardware specs, TPM UEFI Secure Boot and CPU requirements may be avoided, even though booting from a CSM or legacy bios isn’t officially allowed in Windows 11.

Hence, the answer to the above question is yes. Installation of Windows 11 on a PC with a legacy BIOS is as simple as preparing a USB false drive and theWindows 11 installation ISO file.

How can I install Windows 11 on Legacy BIOS?

1. Use a third-party tool

Also, don’t forget to use theseRufus settings for Windows 11if you want to run it on a legacy machine.

This is the easiest method to install Windows 11 on your Legacy BIOS PC because this tool has the simple option to create the bypass for TPM and Secure Boot checks.

2. Modify your Windows 11 ISO manually

You won’t need any other modification for this solution because Windows 10 doesn’t check for TPM 2.0 or Secure Boot, so you should be good to go.

3. Bypass TPM 2.0 and Secure Boot checks from the Windows 11 setup

This should bypass the TPM and Secure Boot checks but will still not get you over the Legacy BIOS problem.

You can overcome that only by creating a booting drive for MBR, just like we did in the first solution using Rufus.

So, this is how you can install Windows 11 without UEFI BIOS and avoid the TPM and Secure Boot checks simultaneously.

We remind you that some of the methods provided here can offer you a clean installation of Windows 11 that will delete all your data on the drive.

History has taught us that anything can happen during an update or installation, so it’s essential to perform a data backup before starting anything. Just use thebest backup softwarein that regard.

If you don’t have a Legacy BIOS, we also have an excellentguide on installing Windows 11 without TPMthat will surely help you.

For any other information or suggestions, you can confidently use the comments section below and write us all about it.

Install Windows 11 on Legacy Bios: no TPM and Secure Boot#

How can I install Windows 11 on Legacy BIOS?#

1. Use a third-party tool#

2. Modify your Windows 11 ISO manually#

3. Bypass TPM 2.0 and Secure Boot checks from the Windows 11 setup#

Install Windows 11 on Legacy Bios: no TPM and Secure Boot

How can I install Windows 11 on Legacy BIOS?

1. Use a third-party tool

2. Modify your Windows 11 ISO manually

3. Bypass TPM 2.0 and Secure Boot checks from the Windows 11 setup