Flashes, blue screen or blank screen when viewing slides with video clips on external monitor or projector

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Note: This problem (and the solution) was reported by James on the PowerPoint Newsgroup. James uses an Acer 5633 which has a NVidia GeForce Go7300 graphics device. Your system may or may not work identically, depending on hardware and driver versions.

Problem

When a presentation that includes video clips is displayed on an external monitor or projector, the video displays in full-screen mode rather than at the inserted size/as a video on the slide. This may occur in any version of PowerPoint.

The resulting synch change which may make the projector or external monitor go blank or blue-screen temporarily.

Solution

Turn off full screen display. To do this:

• Go to nView Desktop Manager
• Select nView Properties
• On the Zoom tab, click on Full screen Video Zoom
• Locate Full screen device and make sure it's set to "Disable"

Note that this may only work when the secondary device is actually attached to the laptop. ...

Have a look here as well Video/Movie plays full screen when projected

Background

NVIDIA graphics drivers may assume that if you are playing a DVD, you'll want it to play full-screen, whether on the laptop's built-in screen or on external ones, and that if an external device is plugged in, you'd always want the video displayed there.

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