Disable autorun in windows 7- No software needed

  Disable autorun feature of your system without any software.

Steps
1: Type RUN in the search box
2: In the box type gpedit.msc
3: Select Administrative template from the newly opened window
4: From there select Windows Components
5: Click on Autorun policies
6: Select Turn off autoplay
7: Click  Enabled
8: Select All Drivers from the menu.
9:Click OK.