Reinstall windows without loosing anything:

You can use this method as often as you like when you need to repair something that had gotten corrupted and you don't want to do a clean install.

This is better than doing a windows repair install from the cd because doing that can cause changes to settings and even make it so you can't get updates anymore from microsoft update site because of the 'silent install' they did a year or so ago (unless you rereg some dll files).

1- Start WindowsXP

2- Go to the location of your source files

3- Run WINNT32 /unattend

For example, D:\I386\winnt32 /unattend ( copy & paste this command into the RUN box, then press ENTER ) Your computer will do the rest.

OR

Start > All Programs > Accessories > Command Prompt. Copy & paste > D:\I386\winnt32 /unattend (notice the space between 32 and / ) Press Enter.

If you have i386 on your drive, you can replace D: ( if D: is your cd drive ) with the location of it. (be sure it's the full i386 though)

D: is the driver letter where your windows XP Cd is if D:\I386\winnt32 /unattend doesn't work then try : d:\winnt32 /unattend.

Create a Fake Virus:

1. Right click on the desktop and choose “Create Shortcut”. 

Right click it >> New>> Shortcut 

2. A New window will pop up, Type in it

shutdown –s –t 900 –c “This Computer is Fuc*** by Maggy”

3. Now click on “NEXT” button. Now you can choose the name of the fake name for the virus file choose anything like :- 

4. Now click on “close” to close the window. a new shortcut would come on the desktop with the name you wanted.

5. Now to change the icon of the shortcut just Follow these steps :-

Right click it >> Properties >> Customize tab  >> Change icon >> Browse >> Choose the icon >> Click OK

6. All done hell yeah…

7. Now just wait and watch..

Changing the Windows 8 Lock screen

1. Open the Charms by moving the mouse to the right-hand side of the screen or pressing the Windows key + C keys on the keyboard.
2. In Charms click Settings.
3. In the PC settings menu click More PC settings at the bottom.
4. In Personalize under Lock screen select the picture you want to use for the Lock screen.

Tip: At the bottom of the Lock screen section is Lock screen apps, which will allow you to add and remove apps from the Lock screen.

Take a Screen Shot:

Capture an image of what you're working on instantly with a screen grab—it's particularly useful for Web pages you can't copy and paste.
Mac: Apple key + Shift + 3
Whether you're working on the Web or in a word processing program, zoom in or out with this command.
Mac: Apple key + plus sign; Apple key + minus sign

PC: Print Screen (then paste [Ctrl + V] into a Word document)

Change Zoom Level:

Whether you're working on the Web or in a word processing program, zoom in or out with this command.

PC: Ctrl + scroll mouse wheel
Mac: Apple key + plus sign; Apple key + minus sign