Rizone CD-DVD Repair is a small utility that will repair Windows if your CD or DVD drive is missing or not recognized by Windows or other programs. Apart form the basic functionality it also allows resetting of Autorun settings and protection against Autorun parasites(virus).
The former lets you repair the Autoplay/Autorun settings if for some reason it fails to work, while the latter provides protection against Autorun virus by disabling the Autorun feature for removable drives. In Windows 7 it will disable autorun for non-Volume devices to protect against viruses, since Microsoft have permanently disabled autorun.inf for removable drives. Use the first option only if Autorun fails to work.