Tips 2 Fix
Windows 11

How to Install Windows 11 25H2 on Unsupported PCs (New Easiest Method)

October 2, 2025

If you’re running Windows 10 on an older PC and wondering whether you can install Windows 11 without the headache of command prompts or registry tweaks — you’re in the right place. In this complete guide, we’ll walk through the easiest updated method to install Windows 11 on unsupported hardware, using a beginner-friendly tool called Tips2Fix installer script.

 Why Upgrade to Windows 11?

Windows 11 brings a sleek new design, improved security, faster performance, and better support for newer software and hardware. Microsoft is ending support for Windows 10 in October 2025, which means no more security updates. If your PC can handle it — even unofficially — this guide will help you upgrade smoothly.

PC Used in This Tutorial

  • Intel Core i7-7700K (7th Gen – officially unsupported)
  • 32GB RAM
  • SSD storage (recommended for upgrade speed)
  • Windows 10 Pro (latest version)

Even though this CPU is not on Microsoft’s supported list (Windows 11 requires Gen 8+), we’ll show how to bypass that limitation.

Step 1: Check If Your PC is Compatible

Download the PC Health Check Tool from Microsoft:
👉 https://www.microsoft.com/en-us/windows/windows-11#pchealthcheck

Use this tool to see if your PC passes the basic requirements. Most unsupported PCs will fail due to:

  • CPU not on the list
  • TPM 2.0 or Secure Boot not enabled

If you fail because of the CPU, don’t worry — we’ll bypass that!

Step 2: Download the Tips2Fix Tool

This script is CMD-free, meaning it has a simple user interface.

Step 3: Check CPU for SSE4.2 and POPCNT

Before proceeding, make sure your CPU supports SSE4.2 and POPCNT instructions. These are critical for Windows 11 24H2 and 25H2.

✅ Supported:

  • Intel CPUs Gen 3 and newer (2010+)
  • AMD FX series and newer

If your CPU only supports SSE4.1 or lacks POPCNT, you cannot upgrade to Windows 11 25H2 or newer.

Step 4: Download the Windows 11 ISO from Microsoft

Go to the official Microsoft site:
👉 https://www.microsoft.com/en-us/software-download/windows11

Download 25h2 ISO Microsoft

Other Methods to get Official Windows ISO:

UUP dump  https://uupdump.net/

  1. Scroll down to “Download Windows 11 Disk Image (ISO)”
  2. Select Windows 11 (multi-edition ISO)
  3. Choose your correct language:
    • en-US for United States
    • en-GB for United Kingdom
    • en (International) for other countries

To check your current language, run this in CMD:

DISM /Online /Get-Intl

Even if you don’t want to use CMD, you can copy and paste this line from my site.

Get Security Updates on  Windows Updates Catalog:
https://www.catalog.update.microsoft.com/Home.aspx

Fix Common Installation Problems

If setup is stuck or fails:

  • Unplug all USB devices (except keyboard and mouse)
  • Disconnect cameras, external drives, hubs, etc.
  • Delete temp files:
%temp%

If it still fails, try my other video tutorials linked below the video or blog.

💡 Fix Boot Issues: Enable AHCI Mode in BIOS

To fix this, make sure AHCI is enabled in your BIOS. Here’s how:

  1. Restart your PC and enter BIOS (usually by pressing DEL, F2, or F10 when the system starts).

  2. Go to the Advanced, Storage, or SATA Configuration section (varies by motherboard).

  3. Find the setting called SATA Mode or Storage Mode.

  4. Change the value from IDE or RAID to AHCI.

  5. Save and exit BIOS.

After enabling AHCI, your system should boot into Windows 11 without problems.

How to Convert MBR to GPT Using Command Prompt

Follow these steps:

  1. Open Command Prompt as Administrator
    Press Start, type cmd, right-click on Command Prompt and choose Run as administrator.

  2. Validate the Disk for Conversion

    mbr2gpt /validate /allowFullOS
    If validation is successful, proceed to the next step.

  3. Convert the Disk to GPT

    mbr2gpt /convert /allowFullOS

📝 Tips 2 Fix Official Github

Safest way to switch to AHCI (from IDE/RAID) on your existing Win10

Method 1 – Safe Boot trick

  1. In Win10 run msconfig → Boot → tick Safe boot (Minimal) → Apply, don’t restart yet.

  2. Reboot, enter BIOS, change SATA = AHCI → Save & exit.

  3. Windows boots to Safe Mode; open msconfig again, untick Safe boot → Restart normally.

Method 2 – Registry (quick)
Open Admin CMD and run:

reg add HKLM\SYSTEM\CurrentControlSet\Services\storahci /v Start /t REG_DWORD /d 0 /f
reg add HKLM\SYSTEM\CurrentControlSet\Services\iaStorV /v Start /t REG_DWORD /d 0 /f
reg add HKLM\SYSTEM\CurrentControlSet\Services\storahci\StartOverride /v 0 /t REG_DWORD /d 0 /f
reg add HKLM\SYSTEM\CurrentControlSet\Services\iaStorV\StartOverride /v 0 /t REG_DWORD /d 0 /f

Then reboot to BIOS → set AHCI → boot Windows.

During the Win11 upgrade

  • Keep AHCI enabled.

  • If it still hangs at the logo: unplug extra drives/USBs, clean boot, and run setup from the 25H2 ISO inside Windows.

If you’re unsure what you’re on now: in Device Manager → IDE/ATA/ATAPI

  • Seeing Standard SATA AHCI Controller = you’re already on AHCI.

  • Seeing Intel(R) Chipset SATA/RAID (RST) = you’re on RAID/RST; switch using the steps above.

Mounting or Extracting the ISO File

Now that you have the ISO file, you can either mount it or extract it:

  • Option 1: Mounting the ISO
    Right-click the ISO file and select Mount. This will open the file as if it were a virtual disk, allowing you to proceed with the installation.
  • Option 2: Extracting the ISO
    If you encounter issues with mounting, you can extract the ISO file using 7zip or WinRAR. Once extracted, navigate to the folder where the files are saved.

Using CMD to Run the Installation

For unsupported PCs, we’ll use CMD (Command Prompt) to start the installation process:

  1. Open CMD as an administrator. (Search for CMD in the start menu, right-click, and choose Run as Administrator.)
  2. In CMD, type the following command to navigate to the folder where the ISO was mounted or extracted: 
    cd [your folder path/sources]

    Replace [your folder path/sources] with the actual path to your windows 11 25h2 extracted folder.

  3. Next, type this command to start the installation: 
    setupprep.exe /product server
  4. Hit Enter. This will launch the installation process.

 

For Using Mount method do this:

 

Open up CMD with right click and run as administrator and type:

E:

Type Driver letter E: and than Enter  (maybe yours will be D: or M: whatever type your specific Letter)

cd sources

and now after you are on sources folder type :

setupprep.exe /product server

it will start installing windows 11 latest version , don’t worry if you see windows server installation its just another port or way to install windows 11 but this is without requirement’s

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Comments

  1. Jack - October 3, 2025 at 1:54 am - Reply

    My computer is HP Pavilion with 16 gb ram and 500 gb ssd hard drive with 24H2 force install .
    On September 30th it quit updating .
    My hard drive was in the red so I removed a bunch of stuff and got it back in the blue .
    I downloaded the new 25h2 and tried to download the other 2 applications you suggested and not getting the responses your video shows .
    I thought doing a forced install would be my best option with the 25H2 but the ISO download works but I am having issues with the tips 2 fix windows 11 installer and the 7 zip download .
    I put all 3 of them on the desktop as your video shows but I’m not getting them to open from that point forward . I don’t know why they don’t say the same thing as when they were downloaded ?

    • tips2fix - October 3, 2025 at 2:13 am - Reply

      Hi Jack! Great job freeing space. Do this:

      Move files from Desktop (if OneDrive) to C:\Install\W11_25H2\. Right-click each → Properties → Unblock.

      Install 7-Zip: open Terminal (Admin) → winget install 7zip.7zip.

      ISO: right-click → Mount (or extract with 7-Zip). If setup.exe/sources missing, re-download ISO.

      Run Tips2Fix as Administrator. If blocked: More info → Run anyway.
      If still nothing, run in Terminal (Admin):

      Set-ExecutionPolicy Bypass -Scope Process -Force
      Unblock-File “C:\Install\W11_25H2\Tips2Fix\*.ps1”
      “C:\Install\W11_25H2\Tips2Fix\Tips2Fix_25H2_Installer.ps1”

      Ensure 25–30 GB free. If updates stalled since Sept 30: Settings → Troubleshoot → Windows Update → Run.

      If it still fails, send a screenshot of C:\Install\W11_25H2\ and any error popup—I’ll pinpoint it.

      Another Method: With Flyby11
      ——————————
      you can do this process if you want with this other script watch the video.
      https://www.youtube.com/watch?v=NEM7-kU6va8
      ——-
      Or you can just try to do it with another method :
      https://www.youtube.com/watch?v=rUXLAhYFTtc&t=24s

      Let me know brother

  2. Chris - October 3, 2025 at 4:58 am - Reply

    Hi there. I followed this video and managed to install W11 successfully, however when my PC restarted automatically while I was sleeping it now boots to the “restart and install proper boot device” screen. Looked around for a few solutions but I’m not sure what to do.

  3. Chris - October 3, 2025 at 5:08 am - Reply

    Hello, I updated to windows 11 yesterday using this method and it worked, but after I went to bed my PC rebooted at some point and now I’m getting the “reboot and select proper boot device” screen. Looked around for some fixes but obviously there’s not a lot of support out there when you bypass the standard restrictions for windows 11. Not sure what to do at this point.

  4. RASHEED KHAN - October 5, 2025 at 7:33 am - Reply

    bro i want zip file which u have used

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