When you open the AutoPlay settings dialog, some or all of the default AutoPlay entries or handlers that come with Windows 7 may be missing.
This happens if the registry settings are wiped out somehow. The complete list of AutoPlay handlers or entries are stored in this registry key:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ AutoplayHandlers \ Handlers
To restore the entries back in a Windows 7 computer, download w7-autoplay-entries.zip, unzip and run the enclosed REG file. Note that the REG file simple reinstate the default AutoPlay entries, and doesn’t disturb the existing entries that third-party software may have added.
Open the AutoPlay settings dialog now and check if the default AutoPlay handlers are restored.
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Ramesh Srinivasan founded Winhelponline.com back in 2005. He is passionate about Microsoft technologies and has a vast experience in the ITeS industry — delivering support for Microsoft's consumer products. He has been a Microsoft MVP [2003 to 2012] who contributes to various Windows support forums.