@echo off
:CheckOS
 IF EXIST "%PROGRAMFILES(X86)%" (GOTO 64BIT) ELSE (GOTO ABORT)
:64BIT
setlocal
for /f "tokens=4-5 delims=. " %%i in ('ver') do set VERSION=%%i.%%j
REM Windows 7
if "%version%" == "6.1" (GOTO W7) ELSE (GOTO ABORT)
REM Windows 8
if "%version%" == "6.2" (GOTO W10) ELSE (GOTO ABORT)
REM Windows 8.1
if "%version%" == "6.3" (GOTO W10) ELSE (GOTO ABORT)
REM Windows 10
if "%version%" == "10.0" (GOTO W10) ELSE (GOTO ABORT)
echo %version%
endlocal
:W7
echo W7 OK
exit
:W10
echo w8, w8.1 or w10 OK
exit
:ABORT
echo OS not compatible
exit