A troubleshooter is available to help you solve this problem. To
troubleshoot the problem, see the DVD
Troubleshooter in Windows Help.
To play DVDs, you must have a DVD-ROM drive and
a software or hardware DVD decoder installed on your computer. If
you do not have a compatible DVD decoder installed, DVD-related
commands, options, and controls do not appear in the Player and you
cannot play DVDs. By default, Windows does not include a DVD
decoder. For more information about DVD decoders, see the DVD Support in Windows XP Web page at the
Microsoft Web site.