How to Fix it When Windows 11 Won't Install

Figure out if your PC is compatible with the OS

If you've tried to install Windows 11, you may have run into a problem with compatibility. Windows 11 has slightly more stringent demands for its host system than previous versions of Windows, including needing more RAM, more dedicated storage space, and a much more recent-generation processor.

If you've hit a brick wall when trying to install Windows 11, there's a good chance your PC isn't compatible. Here are some of the demands you might be struggling with and some potential solutions if your PC already meets the minimum specifications.

How Do I Fix Windows Not Installing?

Follow along below to see if you can figure out how Windows 11 isn't installing and how to hopefully get it going again:

  1. Check your specs. Find out your PC's specifications and see how they compare with the official demands. It's particularly important to make sure that you have enough RAM, storage space, and whether your processor is modern enough to run it. If you find that something doesn't match or exceed the hardware requirements, you'll need to upgrade your PC or replace it before being able to install Windows 11.

  2. Enable Secure Boot. If Secure Boot is Disabled in your UEFI, enable it again, as Windows 11 won't install without it.

  3. Enable TMP 2.0. If your PC supports TMP 2.0, you may need to enable it in the UEFI/BIOS. To do so, access the UEFI and look for the Trusted Platform Technology option. It may sometimes be called the Intel Platform Trust Technology option. Change its option to Enabled. Then save and exit.

  4. Make a new installation media. You can also try using a different installation media, in case the original one you made is corrupted. Download a new Windows 11 ISO from an official source and create a new installation drive or disk before restarting the installation process.

  5. Use a new drive. If you've been trying to upgrade your Windows 10 installation, try installing Windows 11 from scratch on a new or different drive. Alternatively, completely format your existing drive first before trying to install it.

    Before formatting any drive, be sure to back up any important information, files, or saves on a different drive or cloud service first.

Why Won't Windows 11 Install?

One of the most common reasons Windows 11 won't install, is because your PC doesn't meet the minimum hardware requirements and is not compatible. Alternatively, you may have faulty installation media.

Why Is My PC Not Compatible With Windows 11?

Windows 11 has stricter hardware requirements than Windows 10, so if your PC won't let you install it, you may not have a powerful enough, or modern enough PC to run it. The main hardware requirements for Windows 11 are:

  • A dual-core processor with a clock speed of at least 1GHz or higher. It also needs to be 64-bit compatible, and support Trusted Platform Module (TPM) 2.0 or greater. (This is any CPU from Intel eighth-generation onwards, and AMD Ryzen 2000-series (non-APU) processors and newer.
  • 4GB or more of RAM.
  • At least 64GB of storage space available.
  • A graphics card or chip that is compatible with DirectX12 or later.
  • A Secure Boot Capable UEFI.
  • At least a nine-inch display with support for 720p resolution and 8-bit color.
  • An active internet connection.

If your PC doesn't meet any of these specifications, you may run into difficulties when trying to install Windows 11. For more information on the hardware requirements, check out Microsoft's Windows 11 requirements page.

  • Why won't Windows 10 install?

    If you're having trouble installing Windows 10, it could be because the upgrade process was interrupted, for example, if your PC restarted unexpectedly. Try performing the installation again, making sure your PC stays on throughout the process. The problem could also be driver errors: Open Device Manager and look for drivers with a yellow exclamation mark, then right-click and click Update driver or Uninstall device.

  • Why won't Windows updates install?

    Windows update failures can be caused by multiple updates lined up, a lack of drive space, corrupt data files, hardware conflicts, and driver conflicts. There are several ways to fix the problem of Windows updates that won't install, including re-running Windows Update, removing your peripherals and rebooting, checking your drive space, and using the Windows 10 troubleshooting tool (search for troubleshoot settings and click Windows Update > Run the troubleshooter.)

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