@echo off
title Hyper V - VirtualBox

:start

set switch=false
set hv=false
set vb=false

bcdedit | find "hypervisorlaunchtype    Auto" > nul && set hv=true
bcdedit | find "hypervisorlaunchtype    Off" > nul && set vb=true

if %hv%==true (
    if %vb%==false (
        goto hv
    ) else (
        echo ERRRRRRRRRRROR.
        pause > nul
        exit
    )
) else (
    if %vb%==true (
        goto vb
    ) else (
        echo Error
        pause > nul
        exit
    )
)

:hv

title Using Hyper-V
echo Using Hyper-V
set /p switch="Do you want to switch for VirtualBox? (y/n) "
if %switch%==y (
    bcdedit /set hypervisorlaunchtype off > nul && echo Success & title Using VirtualBox & goto restart || echo Fail to switch for VirtualBox. & pause > nul && exit
) else (
    echo Bye
    pause > nul
    exit
)

:vb

title Using VirtualBox
echo Using VirtualBox
set /p switch="Do you want to switch for Hyper-V? (y/n) "
if %switch%==y (
    bcdedit /set hypervisorlaunchtype auto > nul && echo Success & title Using Hyper-V & goto restart || echo Fail to switch for Hyper-V. & pause > nul && exit
) else (
    echo Bye
    pause > nul
    exit
)

:restart

set /p restart="Do you want to restart now ? (y/n) "
if %restart%==y (
    shutdown /r /t 0 && echo Restarting. || echo Fail to restart.
) else (
    if %restart%==n (
        goto start
    ) else (
        echo Bye
        pause > nul
        exit
    )
)

pause > nul