Have you ever given a slide presentation and had Windows pop-up messages notify you of emails or system events? You can temporarily turn these notifications off using Windows Presentations Settings.

  1. Click: Start > Run
  2. Type: presentationsettings exe
  3. Click: presentationsettings.exe
  4. Select: I am currently giving a presentation
  5. Click: OK

You will see an icon in the Windows Notification Area (near the clock) to remind you to turn it off.

Reference: http://www.sevenforums.com/tutorials/6557-presentation-settings-turn-off.html