STEP 1. Open Notepad and Copy code given below into it.

cls
@ECHO OFF
title
if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto
UNLOCK
if NOT EXIST MyFolder goto MDMyFolder
:CONFIRM
echo Are you sure to lock this folder? (Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM
:LOCK
ren MyFolder "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End
:UNLOCK
echo Enter password to Unlock Your Secure Folder
set/p "pass=>"
if NOT %pass%== goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" MyFolder
echo Folder Unlocked successfully
goto End
:FAIL
echo Invalid password
goto end
:MDMyFolder
md MyFolder
echo MyFolder created successfully
goto End
:End

STEP 2.  Save the notepad file as lock.bat (.bat is must)
STEP 3. Now double click on lock.bat and a new folder will be created with name
MyFolder
STEP 4. Copy all your data you want to protect in that New folder
STEP  5. Now double click on lock.bat and when command promp appears Type Y and
press enter.
STEP 6. Now MyFolder will be hidden from you view, to access that folde double click
on lock.bat
STEP 7. It will ask for password enter your password and done. (Default password is
i love hacking)