Do you know that Auto Play command in your computer is a dangerous thing. By default this option is enabled in all operating systems(windows). When you insert any media or device like Cd, DVD, USB, Micro SD Card etc into your computer it will automatically open the media or device
you just attached and will try to play its contents. in the meantime your computer might be at risk of viruses to shift in. So AutoPlay is one of the sources which spreads viruses in computers. To avoid and disable this useless feature in windows follow these simple steps:
Disable Auto Play in Windows XP
Go to Start click Run and type regedit.msc a window will appear, choose Computer Configuration > Administrative Templates > System, Now double click "Turn off AutoPlay" and then set it Enabled. also choose Turn off Autoplay on: All drivers. click Apply and then press OK.
Disable Auto Play in Windows 7
Turning off autoplay in windows 7 is very simple than xp! Go to Control Panel click on "AutoPlay" and uncheck 'Use AutoPlay for all media and devices' That's all.