need help figuring out a batch menu for dos..?

I have to make a batch menu for class. I wrote this down but it isnt working. can someone help me figure out where I am wrong. Thanks in advance

here:

@echo off

:start

cls

echo.

echo **********************************

echo * <<<<< Asif Lalani >>>>> *

echo * *

echo **********************************

echo **********************************

echo * 1 - Open System Info *

echo * 2 - Chk Disk & Defrag *

echo * 3 - Edit Registry *

echo * 4 - Exit *

echo * *

echo ***********************************

echo.

Open/C 1234 /M "Open "

if errorlevel 4 goto exit

if errorlevel 3 goto regedt32

if errorlevel 2 goto both

if errorlevel 1 goto sysinfo

:sysinfo

start "C:\Windows\System32\msinfo32.exe" /launch "msinfo32 "

goto start

:both

start "C:\Windows\System32\chkdsk.exe" /launch "chkdsk "

start "C:\Windows\System32\dfrgui.exe" /launch "dfrgui "

goto start

:regedt32

start "C:\Windows\System32\regedt32.exe" /launch "regedt32"

goto start

:exit

echo End of Program!

pause

exit