How do I install Windows 11 on an unsupported PC



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Windows 11 has strict system requirements, but there are ways around them. For example, it requires at least an 8th Gen Intel, AMD Zen 2, or Qualcomm 7 or 8 Series CPU, but you can install Windows 11 on PCs with older CPUs.

Need to upgrade an unsupported PC?

First, let’s be clear: if you’re on the fence, we don’t recommend upgrading an unsupported PC to Windows 11. Windows 10 becomes official supported with security updates until October 2025.

Windows 11 doesn’t have huge features that make it a must upgrade, and Microsoft warns that unsupported PCs can experience bugs. In fact, Microsoft warns that it may eventually stop providing security updates for unsupported PCs running Windows 11.

However, if you’re interested in running Windows 11 on unsupported hardware, we’ll help you with that.

Whatever you do, we recommend that you back up your important data first. It’s always important to have a backup, especially when upgrading to a new OS, and especially when that new OS isn’t officially supported on your hardware.

Tip: In some situations, you can officially support your PC with one or two configuration changes.

RELATED: How to Immediately Force the Windows 11 Update and Upgrade?

How to see why your PC is not supported

You can check if Windows 11 supports your PC by downloading and running Microsoft’s PC Health Check App

If your PC is supported, upgrading to Windows 11 is easy. You can do it in just a few clicks.

If Windows 11 doesn’t officially support your PC, the PC Health Check will say it “doesn’t currently meet Windows 11 system requirements” and tell you why. If the utility reports that your PC is not supported, the process to follow will depend on the issue being reported. You may need to change a setting in your PC’s UEFI firmware (the modern replacement for BIOS) to support your PC, or the process may be more complicated.

How to enable TPM 2.0

Windows 11 officially requires TPM 2.0. (However, there is a easy way to install Windows 11 if your PC only has TPM 1.2which we will discuss below.)

If the utility reports that your computer does not have TPM, there is a chance that your PC does have TPM, but it may be disabled by default.

To check and enable TPM 2.0, you need to enter your computer’s UEFI firmware settings (the modern replacement for the BIOS). Look for an option called “TPM,” “Intel PTT,” “AMD PSP fTPM,” or “Security Device.” You may find it in the main UEFI settings menu or in a menu called “Advanced”, “Trusted Computing” or “Security”.

For more information, search online for your computer’s model name and “Enable TPM” or refer to its official documentation. (If you built your own PC, look for your motherboard model name instead.)

You may also need to install a UEFI update for your computer or motherboard. Manufacturers have rolled out updates that enable or add support for TPM 2.0 by default. On some PCs it may even be possible to upgrade from TPM 1.2 to TPM 2.0 with a firmware update; it depends on your hardware and system manufacturer. Contact your computer (or motherboard) manufacturer for more information about updates to Windows 11.

After enabling TPM, run the PC Health Check utility again. You should normally be able to upgrade if that was your only problem.

Benj Edwards

Enable Secure Boot

If PC Health Check reports that your computer is not using Secure Boot also requires you to look in the UEFI firmware settings for a “Secure Boot” option and enable it if possible.

You may have disabled Secure Boot to install Linux, or it may be disabled on your motherboard. Modern Linux distributions like Ubuntu and Fedora run on PCs with Secure Boot enabled, so you don’t necessarily need to disable this security feature to install Linux.

If you can enable Secure Boot, run the PC Health Check utility again. You can now upgrade normally, assuming Secure Boot was the only problem.

Benj Edwards

How to Fix No UEFI (MBR instead of GPT)

Windows 11 requires UEFI. Some older computers offer both modes: UEFI firmware or a traditional legacy BIOS. If you’re currently using a “traditional” MBR partitioning setup but your PC offers UEFI as an option, you’ll need to switch to a GPT partition table to use UEFI.

There are several ways to do this. Microsoft’s MBR2GPT tool can allow you to convert disk from MBR to GPT format. Microsoft warns that you should only do this if you know your PC supports UEFI, and you may need to change settings in your PC’s firmware to boot it in UEFI mode instead of legacy BIOS mode .

If this is your only problem, an easier way is to do a clean install. First, make sure to back up your files (we still recommend that you backup your files before upgrading.) Then use Microsoft’s Media Creation Tool to create bootable Windows 11 installation media on a USB drive or DVD. Now use the installation media to do a clean install of Windows 11 and erase your drive. You may need to put your computer’s firmware into UEFI mode first. Windows 11 will wipe your Windows 10 system and set your drive in GPT mode.

Registry hack for unsupported CPUs and/or only TPM 1.2

If your only problem is that your computer has an unsupported CPU and/or it only has TPM 1.2 instead of TPM 2.0, this is the easiest problem to work around.

If you wish, you can get around this limitation with a simple Modification of the Windows registry. If you make this change, Windows 11 will ignore the CPU version check and install it even if only TPM 1.2 is present. However, this does not exclude other checks. For example, if your computer does not have a TPM at all, this registry change will not allow you to upgrade.

Warning: The Windows Registry is complex and you should be careful about what you add, edit, or delete in it. You can cause problems with your Windows installation. If you are not comfortable editing the registry, you should avoid the upgrade. But as long as you follow our advice here, you shouldn’t have any problems.

Open the Registry Editor to get started. You can press Windows+R, type “regedit” and press Enter, or type “registry” in the Start menu search box and click the “Registry Editor” shortcut.

Type the following address into the address bar in the Registry Editor window (or navigate to it in the left pane):

HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup

Right-click in the right pane, select New > DWORD (32-bit) Value, and enter the following text as the name:

Allow upgrades with unsupported TPMO or CPU

Here, double click on the value “AllowUpgradesWithUnsupportedTPMOrCPU”, set it to “1” and click “OK”.

Want to skip the registry editing process? Download our Enable Unsupported Upgrades Registry Hack to make the change in just a few clicks.

This downloadable ZIP file contains two REG files: one that enables upgrades on unsupported PCs (Enable Unsupported Upgrades.reg) and one that undoes the change (Undo Enable Unsupported Upgrades.reg). Double click on the “Enable Unsupported Upgrades.reg” file and agree to add the information to your registry. To undo your change, double-click the Undo file.

These files work the same way as the registry hack above: they just set the “AllowUpgradesWithUnsupportedTPMOrCPU” value to “1” (to allow for unsupported upgrades) or “0” (to revert to the default).

For the change to take effect, restart your PC before continuing.

You can now use the . download and run Windows Installation Assistant tool from Microsoft’s website to upgrade your PC to Windows 11, just as if it had a supported CPU or TPM 2.0. You’ll just have to first agree to a warning

Note: Keep in mind that this only does two things: Windows 11 ignores the CPU requirement and lets Windows 11 install with TPM 1.2 instead of TPM 2.0. It doesn’t get around other requirements. For example, if your PC has no TPM at all or just has an outdated BIOS instead of UEFI firmware, this registry setting won’t help.

PCs with no TPM, no UEFI or other major issues

If the above tips and the registry hack aren’t enough for your PC, things are starting to get tricky now. For example, if your computer doesn’t have TPM at all, it really isn’t supported.

What does that mean? Well, Microsoft offers an official way to install Windows 11 with older CPUs and TPM 1.2 chips for example. You just need to flip a registry setting. It is not supported, but Microsoft will help you with that.

There are reportedly ways to install Windows 11 even if you don’t have TPM 1.2 or UEFI. But this is really not supported – you’re even more at risk of running into bugs and not getting future security updates if you hack even these basic requirements. We’ve also seen mixed reports of success from people following these tricks. Even if it works for you, an update within a few months can turn your computer blue, wreck your operating system, and force you to reinstall Windows 10.

We recommend that you don’t follow any of these extreme tricks – you’ll be setting yourself up for trouble. Windows 10 will run fine until October 2025, by which time you’ll probably want a new PC if your current PC is too old for even TPM 1.2.

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