After you insert a DVD into the DVD drive of a Sony computer that is running Microsoft Windows XP Media Center Edition 2005 with Microsoft Update Rollup 2 for Windows XP Media Edition installed, you cannot play the DVD in Media Center.
This problem may occur if a third-party program is accessing a Sony media changer that is connected to the computer.
To work around this problem, quit the third-party program that is accessing the Sony media changer. Then, play the DVD in Media Center.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Media Center Technical Support
Because Microsoft Windows XP Media Center Edition was included with your hardware device or system, the hardware manufacturer provides technical support and assistance for this software. Your manufacturer may have customized the installation with unique components such as specific device drivers and optional settings to maximize the performance of that manufacturer's hardware. If you require technical help with Windows XP Media Center Edition, contact your manufacturer directly because the manufacturer is best qualified to support the software that the manufacturer has installed on the hardware.
You can also visit the Windows XP Media Center Edition product information Web site at the following Microsoft Web site: http://www.microsoft.com/windowsxp/mediacenter/The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.