To Fix Windows Could Not Load Required File Winsetup.dll | How

Incorrect SATA or boot settings may cause file access issues.

Save and exit (F10).

Sometimes, the error is not the file but the environment trying to read it. Incorrect BIOS settings can block access to winsetup.dll.

Steps to adjust BIOS:

Now try booting from your installation media again.

If all else fails, bypass the graphical setup entirely by using DISM (Deployment Imaging Service and Management Tool) to apply the image directly. how to fix windows could not load required file winsetup.dll

What you need: Another Windows PC, your USB drive, and an external hard drive.

Steps:

This method completely avoids the Windows Setup environment that triggers the winsetup.dll error.