when ever i try to download a ovie or video file when its done downloading or when i previe it it only playes the audio it doesns show any of the video just playes that audio the name turns red an erroe mark goes next to it does anybody know how to change this???????

PLZ HELP ME!!!!!!!
PLZ!!!!!!

yes the audio is correct it goes with the video but i just cant see the video i had my freind download the same files and the videos worked on his computer but our audio were the same when i try to run the windows medial player and winmp come up and they only play audion when i play them im meadia player the title turns red i downloaded the new windows media player 2

thx ill try