Forum Discussion
ZoeyAdams
Aug 17, 2025Iron Contributor
How can I force to install Windows 11 on unsupported PC?
I want to upgrade to Windows 11 from Windows 10 as I just received the news that it will be end of support soon. It is old DIY-PC but it is still a power horse. When I was trying to install Windows 1...
Elondusk
Aug 18, 2025Iron Contributor
Simply replace appraiserres.dll to install Windows 11 on unsupported hardware for unsupported PC and no TPM/Secure Boot.
Best for: Installing from an ISO directly
1. Download the Windows 11 ISO (Microsoft’s site).
2. Mount the ISO (double-click) or extract it.
3. Navigate to:
\sources\appraiserres.dll
4. Delete or rename this file.
5. Create a bootable USB with the modified files (using Rufus or Media Creation Tool).
Install Windows 11 on this unsupported PC and it won't check for TPM.