No Video On Second Display.

[Emilio Guifarro]

I still have no video on second display when i playback .vob files.
Wmp didn't playthem back too only the dvd's. I uninstalled and re-inst. k-like codec and driver updated didn't work too. Driver update outcome showed i had the best driver installed for the video card. I think the restore point in vista chages i didn't do it properly. I don't understand the instructions, seems like something is missing in it. I also think might be the port i use (vga) i will try the hdmi.
What makes me think is not the codec is that i have a desktop in which wmp doesn't playthem back too and i don't have that problem with hoster.
New ideas are welcome. Thank you all