Help us to help you. What equipment and method are you trying to use to
display the wmv on the TV or projector?
What is your computer composition and software being used?
Now, if this is a laptop and you are attempting to show the video on the
internal monitor and the projector at the same time, this is a known problem
with some systems (video system doesn't have enough "power" to drive both
displays.) Simply press the Fn key while tapping the key to switch to the
VGA output only (normally the F3, F4 or F5 key and it may have a monitor
picture or LCD printed on the key.) This is a three position toggle that
will go from the internal display only to the internal and external display
and then the external display only. It takes time for the machine to switch
so only press it once, wait to see what happens then if needed press it
again.