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Bobomm's avatar
Bobomm
Bronze Contributor
Oct 30, 2025

How can I install Windows 11 25H2 on unsupported PC?

Got an used Dell desktop PC(HP Pavilion Desktop PC 2018) and I can't install Windows 11 25H2 on it as the setup utility says This PC can't run Windows 11. After some digging, i found out My PC doesn...
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rugjoaloap's avatar
rugjoaloap
Iron Contributor
Oct 30, 2025

What is the "Panther" File Hack?
This method involves modifying or deleting a specific file (appraiserres.dll) inside the Windows installation sources. This file is responsible for the hardware compatibility check during setup. By removing it, you essentially blindfold the installer, preventing it from knowing whether your PC is "supported" or not.

How to Install Windows 11 25H2 on Unsupported PC:

  1. Download the Windows 11 25H2 ISO.
  2. Mount or extract the ISO.
  3. Navigate to the Sources folder.
  4. Back up the original appraiserres.dll.
  5. Replace appraiserres.dll with a patched version (found in various community forums or repositories).
  6. Rebuild the ISO using tools like oscdimg.
  7. Boot from the modified media and proceed with installation.

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