Mount your WinPE boot.wim using DISM, navigate to Windows\System32, and replace winpe.jpg with your custom image (same name and format). Then unmount with commit. Finally, rebuild the ISO using MakeWinPEMedia to apply the new background successfully.
Mount boot.wim via DISM, open System32, and swap winpe.jpg with your custom JPG. Keep filename identical. Commit changes and unmount. Rebuild media using MakeWinPEMedia so the updated background appears during WinPE startup.
Use Windows ADK tools to mount WinPE. Replace winpe.jpg inside Windows\System32 with your image. Save and commit changes through DISM, then regenerate bootable ISO or USB to see the new WinPE wallpaper applied.
After mounting WinPE using DISM, locate winpe.jpg in the System32 folder. Replace it with your own JPG file. Commit the image and unmount. Create new boot media using MakeWinPEMedia to finalize and test the updated background.
Open your WinPE image with DISM, go to Windows\System32, and overwrite winpe.jpg. Ensure correct format and resolution. Commit and unmount the image. Rebuild your ISO or USB using MakeWinPEMedia to apply the custom background successfully.