Hi,
For troubleshooting purposes, I suggest we check if the DVD can be played using a third-party DVD player. Let's download and install a third-party DVD player trial version to your local Desktop from the following link:
PowerDVD
<http://www.gocyberlink.com/english/products/product_main.jsp?ProdId=28>
A trial version download link:
<http://www.gocyberlink.com/english/download/dl_file_new.jsp?dl_id=1&ProdId=28>
WinDVD
<http://www.intervideo.com/jsp/WinDVDPlatinum_Profile.jsp>
A trial version download link:
http://www.intervideo.com/jsp/Product_Download.jsp?p=WinDVDPlatinum
NOTE: WinDVD trial version works only for the first 5 minutes when playing a DVD.
You can also use Vista built-in player –wmp11. After installing the Vista Codec Package 4.5.3, most of videos can be played by wmp11.
Vista Codec Package 4.5.3
http://www.free-codecs.com/download/Vista_Codec_Package.htm
Please Note: The third-party products discussed here are manufactured by companies that are independent of Microsoft. We make no warranty, implied or otherwise, regarding these products' performance or reliability.
If we can play the DVD using one of the players downloaded above, this indicates this issue is caused because there is no DVD decoder present. We need to obtain and install a decoder that is compatible with Windows Vista.
For more information, we recommend upgrade the program and contact the manufacturer for details.
Hope it helps.
