@echo off
echo Old usernames are:
for /d %%A in (C:\OldDrv\Users\*) do echo %%~nxA

set /p oldusername="Enter the old username: "
set filepath="C:\OldDrv\Users\%oldusername%\AppData\Roaming\Microsoft\Windows\Themes\TranscodedWallpaper"

if exist %filepath% (
    ren %filepath% TranscodedWallpaper.jpeg
    reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "%~dp0TranscodedWallpaper.jpeg" /f
    reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
    reg add "HKCU\Control Panel\Desktop" /v TileWallpaper /t REG_SZ /d 0 /f
    RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters ,1 ,True
) else (
    echo The specified file does not exist. Please check the old username and try again.
    pause
)

exit