King Files

1) Turning Off the Projector with your Smart Phone during Lecture.

What if you can turn off the projector whenever you want in a lecture, that too without getting caught. Actually its quite easy if you are having a high end smartphone with you. Most of the high end smartphone comes with an IR blaster hardware to control Infrared Devices like TV, Home theater, Air conditioner etc. All you need is an app to use IR blaster. The rest procedure is simple just launch the app and control the projector through your phone. IR universal Remote app will do to control almost anything which comes with an remote.
Some common devices with built-in IR blaster :

• Samsung Galaxy S4/S5 
• Samsung Galaxy Note 3 
• HTC one 
• HTC One M8 
• LG G2 

2) Faking Desktop

Its an old school method to fake an Desktop, where you take an Screenshot of your desktop and apply it as an background. Now to make it look like real one, just hide the desktop icon (Right click the desktop - Arrange Icons by - uncheck show Desktop Icon) and the task-bar, to do so just drag the task bar below down to the screen. All done. Now just look at your friend freaking out and clicking on the wall paper continuously to actually open a file or my computer.

Note: This tricks works only on Windows XP.

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explorer.exe is the default windows user shell, which is responsible for the file manager, desktop and task bar to function properly. Here we will be killing this process to stop desktop and task bar from working.
Here we will be creating a windows.bat file to kill explorer.exe file as soon as the PC starts.
Create a note pad file with following line in it and save it as anyname.bat . Remember to change to extension while saving save the file with an .bat extension.

taskkill /f /im explorer.exe

Save the above file in the startup folder( Start menu- All programs - Startup), so that the file run automatically as soon. as the system starts. This will kill the explorer.exe file and all you will see on the desktop is empty screen without task bar and desktop icon. Even the mouse right click wont work. To start any activity you have to start it through windows task manager.
Its almost impossible for any geek out there to find out whats happening out there unless you tell him. So make sure that you remove the file once you are done having fun with your friend. To do so start task manager then File- New task. In new task type explorer.exe and start. Desktop will appear with task bar and icons and all the function will start working again.

(Note: Make sure you remove the file from the startup once done with the prank).

4) DVORAK Keyboard

DVORAK keyboard is another version of QWERTY keyboard, the only difference is that the position of keys in DVORAK keyboard is not same as QWERTY. Just by changing the default keyboard of your friends system you can have a lot more fun with him. This is one of the oldest prank in Computer world. To do so just go to control panel - Region and Language - Keyboards and language - change Keyboards. Add a new keyboard with English (United States) as language and keyboard as DVORAK. All done now you will a language bar docked in the task bar there all you need to do is set DVORAK keyboard as default. Have Fun with your friend trying to find out whats the problem with the keyboard.

5) Shut Down the PC on opening the Browser.

This is one of the easiest trick to fool your friends. If you want that the PC should turn off as soon as the Internet explorer of Mozilla firefox is turned on all you need to do so is edit the properties by right clicking the icon of IE and Firefox and change target to "%windir%system32shutdown.exe -r -t 00". Now Sit back and relax.

6) Windows Pop-up Error Message.

This is one of the best trick you will find on the Internet. Easy to implement and you can scare the hell out of your friend or colleague. We underestimate the power of VB scripts, today we will we learning how to use vb scripts to create your own personalized pop-up error message.

Create a notepad file and write following code into it and save it with .vbs extension.

pub=msgbox("Do you want Windows to format your Hard Drive?",20,"PubInfotech.com")
if pub=6 then msgbox "You said yes.Ok then You asked for it...",6,"PubInfotech.com"
if pub=7 then msgbox "Do we care what you want? Answer is NOOO",6,"PubInfotech.com"
pub=msgbox("Formatting Hard Disk. Please Wait...",6,"PubInfotech.com")
pub=msgbox("Almost done Formatting. To retrieve data back visit PubInfoTech.com right now ",2,"PubInfotech.com")
if pub=3 then msgbox "Theres no way you can abort a formating! Try again.",6,"PubInfotech.com"
pub=msgbox("Almost done Formatting. To retrieve data back visit PubInfoTech.com right now ",2,"PubInfotech.com")
if pub=5 then msgbox "You cant ignore the Format Wizard! Try again.",6,"PubInfotech.com"
infotech=msgbox("Almost done Formatting. To retrieve data back visit PubInfoTech.com right now ",2,"PubInfoTech.com")
if infotech=4 then msgbox "Restarting Format! Please Wait...",6,"PubInfoTech.com"
pub=msgbox("Formatting Hard Disk. Please Wait...",6,"PubInfoTech.com")
pub=msgbox("Format Complete! Now you may Die in Peace",6,"PubInfoTech.com")

Save the above file in the startup folder to run it automatically as soon as the PC starts.