Windows Vista - http://www.vistaarticles.com
Audio not Synchronized with Video
http://www.vistaarticles.com/articles/232/1/Audio-not-Synchronized-with-Video
By 
Published on 12/10/2006
 
When you play a video or a DVD in Windows Vista, the audio part of the playback may not be synchronized with the video playback.

Audio not Synchronized with Video

To work around this problem, change the active power plan to Balanced or to High Performance.

If you change the power plan to Balanced or to High Performance, you may reduce the battery life of the computer.

To change the active power plan to Balanced or to High Performance, follow these steps:1. Click Start, type power in the Start Search box, and then click Power Options in the Programs list.

 If you are prompted for an administrator password or confirmation, type your password or click Continue. 
2. Under Select a power plan, click Balanced or click High performance.

Note The computer manufacturer may have changed the names of the Windows Vista power plans.