The below code in MS DOS will help you to lock folder/files without using any software. Though it can be easily cracked, will help you to lock to beginners of windows.
Copy this below code to a notepad and save it as Locker.bat Replace this line "if you want to change pass %pass%==welcome is pass goto FAIL" with required password of your own. Double click the Locker.bat file, this will create a folder calling "locker" on the current folder. Place the file that to be locked on the newly created "locker" folder. Now, again double click the Locker.bat file. This will make the locker folder to hide thereby locking the files inside them. To Unlock the files, double click the Locker.bat file and give the correct password.
Copy this below code to a notepad and save it as Locker.bat Replace this line "if you want to change pass %pass%==welcome is pass goto FAIL" with required password of your own. Double click the Locker.bat file, this will create a folder calling "locker" on the current folder. Place the file that to be locked on the newly created "locker" folder. Now, again double click the Locker.bat file. This will make the locker folder to hide thereby locking the files inside them. To Unlock the files, double click the Locker.bat file and give the correct password.