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How to Install Windows 11 On Old PC

Do you want to install Windows 11, but your PC is old or unsupported?

As you already know, Microsoft has recently introduced its full commercial version of the new operating system – Windows 11. The new OS isn’t sold separately but as an upgrade to your existing Windows 10. To successfully install Windows 11, you will need a valid license for Windows 10 and version 2004 or later installed.

If you aren’t in a hurry, there’s an option to wait through the Windows update to be offered a Windows 11 installation one day, but if you don’t have the patience to wait, read on.

Install Windows 11 on a newer PC

Suppose you have a relatively new and powerful PC and want to install a new Microsoft Windows 11. Here we have two variants, installing a new OS from scratch or upgrading your existing Windows 10.

However, just in case, you must ensure that your computer is compatible or ready to install a new OS.

The first step is to download the PC Health Check program. If PC Health Check determines that your PC is Windows 11 compatible, you must go to the second step.

PC Health Check

The next step is to download Windows 11 from the official Microsoft site. Note that to install Windows 11, you have three options:

  • upgrade from Windows 10,
  • create a USB flash drive with Windows 11 installation and
  • download Windows 11 ISO image disc.

Download Windows 11

Windows 11 Installation Assistant

The Windows 11 Installation Assistant (IA) application is the easiest way to install a new OS. With IA’s help, you will upgrade your Windows 10 to version 11 in a few simple steps. By installing this way, all your data and programs will remain intact.

Windows 11 Installation Assistent

For clean installation and more flexible operation, I recommend the second option to create a USB flash drive with Windows 11.
So, prepare one blank USB flash drive of at least 8GB.

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MS Media Creation Tool Licence Terms
Language and Edition - MS Windows 11 Setup
Windows 11 Media To Use
Downloading Windows 11 - MS Media Creation Tool
Media Creation Tool - USB flash drive ready
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After creating the Windows 11 USB installation disc, you must reset the computer and enter the BIOS. In the BIOS, select the primary Boot device as a USB flash drive with Windows 11.

Windows 11 Install - BIOS Settings

When you restart the computer, installing a new OS will start. All other steps are similar to the Windows 10 installation process.

Please note: If the SSD isn’t new, you must know that this installation method involves deleting all data. Therefore, save important data before starting the installation on the old disk.

Install Windows 11 on an older PC

You have installed Health check, and after checking, there is a message that the computer isn’t compatible with Windows 11.

PC Health Check result

Although you think your computer is powerful enough to run smoothly with Windows 10, how is it possible it will not work with Windows 11?

No matter what Microsoft says, you can successfully install Windows 11 on your “old” or unsupported PC with a trick.

I will immediately tell you from experience that you can install Windows 11 on much older computers and laptops with dual-core processors, but with certain conditions.

The minimum RAM must be 8GB and an SSD capacity of 240GB or higher. If you meet these two conditions, you will enjoy everything the new operating system brings without any problems. If you have completed these two conditions, let’s install Windows 11 on an older PC.

Clean install of Windows 11

As I explained earlier, prepare a USB flash drive with Windows 11 installation. Start the computer and wait for the OS installation screen to appear.

Win 11 USB Install S1

Please select I don’t have a product key and move to the Next button for the next screen.

Win 11 USB Install S2

The next step is to choose the version of the operating system as I chose Windows 11 Pro.

Win 11 USB Install S3

After selecting the OS version, this next screen appears, informing you that your computer doesn’t meet the minimum requirements for installing Windows 11.
Most would give up right away at this stage but don’t despair. There is an elegant solution for moving on to the next step. While still on this screen, press the Shift + F10 key combination.

Win 11 USB Install S4

A command prompt window will open in which you will type the Regedit command and press Enter.

Win 11 USB Install S5

The Registry Editor will open in which you need to select: HKEY_ LOCAL_MACHINE / SYSTEM / Setup

Win 11 USB Install S6

Now you need to do the following steps:

  • Create a new key in the right window (right-click, New Key),
  • The name of the new key should be LabConfig, press Enter,
  • Go to the right side of the Registry window, right-click, and create; New – DWORD (32-bit) Value,
  • Type the name BypassCPUCheck and press Enter.
  • Right-click on DWORD and put 1 instead of 0 in the Value Data field

Repeat the same procedure for two more values: BypassTPMCheck and BypassSecureBootCheck, so it looks like the following image.

Win 11 USB Install S7

When you’re finished editing in Registry Editor, close the window and type exit at the command prompt.

Win 11 USB Install S8

And moment of truth

Now click the back button in the dialog box.

Win 11 USB Install S9

We return to the OS version selection and click the Next button.

Win 11 USB Install S3

And as you can see, there are no more warnings that your computer doesn’t meet the requirements for Windows 11.

Win 11 USB Install S10

Next, we continue the installation ordinarily similar to Windows 10.

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After 10 to 15 minutes and a few standard questions about the Windows 11 user environment, you come to the home screen of your new operating system.

Win 11 USB Install S12

As you have seen, we can make Windows 11 run smoothly and seamlessly on older hardware with a few tricks.

Win 11 USB Install S13

Upgrade of Windows 10 to Windows 11

Another way to install Windows 11 on your old computer involves the upgrade process with Windows 10. And for this process, you need a USB flash drive you made for this process.

You don’t need to change anything in the Registry Editor for this method of installing Windows 11. Note that the installation preparation includes saving all your data and programs after upgrading to Windows 11.

Here I warmly recommend that you manually save all your data if the upgrade process goes wrong due to some driver or hardware that Windows 11 will not recognize properly.

The only prerequisite for this installation of Windows 11 is downloading a small script from here.

Do the following steps:

  • Unzip the downloaded file and run the script,
  • From the USB flash drive with the Windows 11 installation, run the setup.exe file

Upgrade Windows 10 Step 1

  • Connecting to the Internet while installing the OS update would be best.

Windows 10 Upgrade Step 2

Ignore the warning that there will be a compatibility issue with your hardware in Windows 11.

Windows 10 Upgrade Step 3

Before upgrading your existing OS, choose what you want to do with your data.

Windows 10 upgrade Step 5

You are then ready to install Windows 11. Be patient until the installation is complete, and see the new Windows 11 interface in about 30 to 45 minutes.


If you’re curious about the new Windows 11, you can try it out on your PC even though PC Health Check says otherwise. The only condition is that your PC has enough memory (at least 8GB) and an SSD with which the new operating system will work quite well.

I recommend making a USB flash drive with a Windows 11 installation and starting with a clean installation on a blank SSD. This way, you’ll be familiar with the Windows 11 interface, and if you don’t like it, don’t upgrade from Windows 10.

However, if you decide to upgrade immediately, I advise you to save all the essential data manually just in case. It is unlikely that something will go wrong, but Murphy’s Law does not sleep. Anyway, good luck with installing and migrating to Windows 11.

If you have any additional questions or suggestions, do not hesitate to leave a comment.

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