.mov files wont play properly

I cannot seem to play .mov files as they stop in the middle or even dont paly at all. can some one help me!

*.mov files may be played using Quicktime.

please someone help me. The .mov file is playing but there is no image. i can only here sounds. and it says that my quicktime player is up to date but it says I am missing a plug-in and it is not found in the server. please help me. thank you

if you goto the quicktime home page you will get all your plug inns there just google quicktime.com

also Media Player Classic comes highly recommended

thanks but I already tried that countless of times And I really don’t know whta’s wrong with my computer. anyway im going to reformat and see if it will work this time. thank you.

Hi in my Ares some of my music video’s work but the AVI ones dont work can any one help me .. Thank you