autostart-cd-rom.com
All information on the Windows autostart / autorun feature!
Problems & Solutions
The autorun-function does not work with removable media 
Open the drive properties dialog (click on the drive icon in the Windows Explorer with the right mouse button to display the context menu and select "Properties"). Now switch to the "Autoplay" tab and activate the autorun feature here.
If this does not help:
Execute "regedit.exe" from Windows. Navigate to this key in the registry:
HKEY_CURRENT_USER / Software / Microsoft / Windows / CurrentVersion / Policies / Explorer
Open NoDriveTypeAutoRun and set its value to 91.
Press OK and then navigate to this key:
HKEY_LOCAL_MACHINE / SYSTEM / CurrentControlSet / Services / Cdrom
Open Autorun and set the value to 1 and hit OK. Once you have restarted your system the changes show take effect.
Important: For Windows 7 there is no autorun feature for removable media except CD-ROM's and DVD's. It is deactivated for all other removale media types and cannot be activated!
No autorun option for USB flash drives etc.
Open the "autorun.inf" file using a text editor (e.g Notepad from Windows) and add the following line in the [open] section:
action=Sampletext. This sets the text ("sampletext" in this case) that will be shown in the autostart dialog of Windows when the media is mounted. If this text is missing, the autostart dialog will not be shown.
Important: Windows 7 does not have an autorun feature for USB flash drives and similar devices!