Batch application won't execute

Question

I am trying to make a Windows Troubleshooter within batch, because why not?

When I come to main menu script, the application won't execute any further, and closes. I have tried to use the CALL function to call the application main menu, and put the code in a separate program, but it won't execute then either... Does anybody know how to fix this? Code is attached below.

First.bat

@echo off 
color a 
title Windows Toubleshooter 
cd C:\windows 
cls 
echo Loading files. Please wait... {LOADING MECHANISM HERE!!} 
echo Loading complete echo Press a key to continue... 
pause >nul 
call main.bat

Main.bat

cls
color 7c
echo Welcome to the  Windows Troubleshooter. To continue, please chose one of the options below.


echo 1) Check for errors
echo 2) Repair errors
echo 3) Exit
echo Please chose an option: 
choice /c asdw/n /m "Chose with W A S D"
IF %errorlevel%==1 goto errorcheck
IF %errorlevel%==2 goto repair
IF %errorlevel%==3 goto exit