@echo off
setlocal ENABLEDELAYEDEXPANSION
copy %appdata%\Microsoft\Windows\Themes\TranscodedWallpaper c:\wallpaper\wallpaper.jpg > nul
reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP /v LockScreenImagePath /t REG_SZ /d "c:\wallpaper\wallpaper.jpg" /f > nul
reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP /v LockScreenImageUrl /t REG_SZ /d "c:\wallpaper\wallpaper.jpg" /f > nul
reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP /v LockScreenImageStatus /t REG_DWORD /d 1 /f > nul
exit