Programs like VMWare like to disable the CD-ROM “Auto Start” or “Auto Play” feature. here is how you enable or disable the feature:

• Click the Start button followed by selecting “Run”.
• Type in “gpedit.msc” and click OK.
• Click and expand “Computer Configuration”, followed by “Administrative Template”, followed by “System”.
• Double click “Disable Autoplay”
• Select “Enable” or 'Disable“.
• Click “OK”.