As Jack says, you're probably dealing with a protection issue. What format are the videos? Are they DVDs, mpgs, ...? Are they commercially made or ones that you made yourself? Are the ones that work a different format than the ones that don't? What players have you tried other than Windows Media Player? -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of David McFarlane Sent: Tuesday, November 11, 2008 5:37 PM To: [log in to unmask] Subject: [MSUNAG] Videos show in only one WMP window We have a system with dual DVI outputs cloned to go to two screens. For reasons I will not go into, one of those goes through a DVI to VGA adapter plus other equipment before it reaches a monitor. We need to play some video files on both screens of this system. When we run the files in WMP or whatever, they show up just fine on the direct DVI monitor. However, the other montitor shows everything on the screen *except* the video playing in the window. This only happens with some videos. Some videos show up just fine on both screens, while others show up on the direct DVI screen but not the other. We cannot figure out how to make this hardware work with all our videos, or make all our videos work with this hardware. At this point I suspect the DVI to VGA adapter, but that is only a guess. Perhaps there is some oddball copy protection in place that blocks just the video pixels in going from DVI to VGA. But who knows? Anybody have any ideas? Thanks. -- dkm