Abort Windows Shutdown

Sometimes after you click on windows to shutdown, you remember that you don't really want it to shutdown. Also there are viruses (virii) that force the computer to shutdown after 60 seconds or so. So in order to stop the PC from shuttingdown you may write the following command in the command prompt:

"shutdown -a"

Note: In order to get the command prompt you can press on the "start menu", then choose "run...", write "cmd" there and press enter.