Making a folder which can't be deleted

Do you know we can make a folder that can't be deleted. HOW???
The ans is : "Using command prompt". For this follow the following instructions :

1. win + R and type cmd.

2. Type the drive name in which you want to create your folder with the format : <drive_name>: and press enter. E.g.: to create a folder in drive d we have to type : "D:"
 *Note: We can't create the folder in the drive c.

3. Now type the command md and any of the  keywords below & \  :
"con, aux, lpt1, lpt2, lpt3, lpt4, lpt5, lpt6, lpt7, lpt8 and lpt9"
 E.g.:  "md con\" or "md aux\" etc.

#You can't delete your folder manually.To delete this folder you have to type rd and your folder name(keyword) with \ in command.

How to create Hidden account (IN WINDOWS)

It is possible to create hidden account in windows using notepad,How???
Let's follow the following steps:

Step-1:
open notepad and copy the code given below:

@echo off
net user hidden password hello /add
net local group Administrators Techhacks /add - See more at: http://computertrickx1.blogspot.com/2015/09/how-to-create-hidden-user-account-in.html#sthash.OA5KNoJf.dpuf

 @echo off
net user hidden password  PASSWORD
net local group Administrators USERNAME
*Note: Replace the PASSWORD with your own password and USERNAME with your username.

Step-2:
Now save this as security.bat or give the name whatever you like but the file extension should be .bat.

Step3:
Open this by right click and select Run as Administrator and the cmd prompt will appear on the screen.

Step 4:
To see this has been created or not : open cmd and type net user and you can see the message with successfully created the hidden account .

@echo off
net user hidden password hello /add
net local group Administrators Techhacks /add - See more at: http://computertrickx1.blogspot.com/2015/09/how-to-create-hidden-user-account-in.html#sthash.OA5KNoJf.dpuf

@echo off
net user hidden password hello /add
net local group Administrators Techhacks /add - See more at: http://computertrickx1.blogspot.com/2015/09/how-to-create-hidden-user-account-in.html#sthash.OA5KNoJf.dpuf

@echo off
net user hidden password hello /add
net local group Administrators Techhacks /add - See more at: http://computertrickx1.blogspot.com/2015/09/how-to-create-hidden-user-account-in.html#sthash.OA5KNoJf.dpuf

DO YOU KNOW??

1.  We can pause and play the you tube video by just pressing "K" .
2. We can move the video 10 sec backward by pressing "J" and 10 sec forward by pressing "L".
3. We can clear the cache by pressing ctrl+shift+R and also it refreshes your page.

ACCIDENTALLY CLOSED THE TAB????

DO YOU WANT TO GET BACK YOUR RECENTLY CLOSED TAB????

It's simple : Just press ctrl + shift + t