Удалить содержимое раздела реестра

@echo off
Reg delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /f
Reg delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder" /f
Reg add "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /f
Reg add "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder" /f

::удаление всех параметров в ветке
reg delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg" /va /f
::перебор всех подразделов и их удаление
for /f "skip=4 delims=" %%i in ('reg query "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg"') do reg delete "%%i" /f
 
reg delete "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder" /va /f
for /f "skip=4 delims=" %%i in ('reg query "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder"') do reg delete "%%i" /f

goto :start
:fn1
set n=--
for /f "skip=4 delims=" %%i in ('reg query %1') do (set n="%%i" & goto :next)
:next
if "%n:~1,1%"==" " reg delete %1 /va /f
for /f "skip=4 delims=" %%i in ('reg query %1') do reg delete "%%i" /f
exit /b
:start
call :fn1 "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg"
call :fn1 "HKLM\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder"

for /f "skip=4 delims=" %%i in ('reg query %1') do reg delete "%%i" /f

for /f "skip=2 tokens=3 delims=      " %%i in ('reg query %1') do reg delete "%%i" /f

for /f "skip=2 tokens=3 delims=      " %%i in ('reg query %1') do reg delete "%%i" /f

if "%n:~1,1%"==" " reg delete %1 /va /f

goto :start
:fn1
for /f "tokens=3* delims=   " %%i in ('reg query %1 /v') do (
 (echo "%%i"|findstr /r /i "27") && reg delete "%%i")
exit /b
:start
call :fn1 "HKEY_LOCAL_MACHINE\Software\Mytest\"

goto :start
:fn1
for /f "skip=4 tokens=3 delims=     " %%i in ('reg query %1') do (
 @(echo "%%i"|findstr /r /i "27\>") && set n="%%i")
goto %ERRORLEVEL%
:0
reg delete %1 /v KEEPALIVES_26 /f
:start
call :fn1 "HKEY_LOCAL_MACHINE\Software\Mytest"
:1
exit

goto :start
:fn1
for /f "skip=4 tokens=1,2,3 delims= " %%i in ('reg query %1') do (call :fn2 "%%i" "%%j" "%%k" %1)
exit /b
:fn2
if not "%~2"=="REG_SZ" exit /b
set z="%~1"
if not "%z:~1,1%"==" " exit /b
set x=%3
set y=%x:;27=%
if %x%==%y% exit /b
set z="%z:~5,-1%"
echo %z%
if %z%=="<безымянный>" (reg add %4 /ve /t REG_SZ  /d %y% /f & exit /b)
reg add %4 /v "%z:~5,-1%" /t REG_SZ  /d "%y%" /f
exit /b
:start
call :fn1 "HKLM\SOFTWARE\Mytest"

for %%a in (
 
name11
 
 
) do (
    for %%b in (HKCC) do (
 
        for /f "tokens=1*" %%c in ('reg query %%b /s /f "*%%a*" /v ^| find /i "%%a"') do (
            REM reg delete "%%c" /f
            echo %%c
            
        )
    )
)