opengl and s-video

hi guys i currently have my desktop pc connected to my tv via s-video to watch movies shows etc, i can play cod4 and other dx games normally, but when i try to run quake3 i get the “GLW_StartOpenGL() - could not load OpenGL subsystem” error, i can play quake 3 normally when using monitor, its just on the svideo output that i get that error

any suggestions ? thx in advance =)