An Error message pops up when a DVD is played with Window Media Player and the screen is toggled by pressing Fn+F7 - Lenovo 3000 Notebook and ThinkPad General
When playing a DVD in Windows Media Player with a external monitor attached, toggle the screen by pressing Fn+F7. Observe that an error message Windows Media Player cannot play this DVD because there is a problem with digital copy protection between your DVD drive, decoder and video card. Try installing an updated driver for your video card window as shown below will be displayed.
Any of the following systems running on Microsoft Windows Vista:
ThinkPad (All types)
Lenovo 3000 notebook (All types)
This is a limitation of Microsoft Windows Vista Service Pack 1.