Problem With Windows Media Player

I updated from Vista to Windows 7  and all of a sudden now I can do NOTHNG without windows media player - and I canot delete the program, open ay other programs because it will ONLY open that program - cannot install any other programs, cannot restore to a previous date - anything I try - this con founded program opens and wont go away, won't minimize, can't close- NOTHING!

Someone help please!

I am trying to import a video into Windows Movie maker, but it won't let me, It saysThe file C:Documents and SettingsaMy DocumentsGraboidCompleted5165372_-_Harry_Potter_and_the_Half-Blood_Prince_(2009)_(2_CD)nedivx-hp6-cd1.Avi cannot be imported because the codec required to play the file is not installed on your computer. If you have already tried to download and install the codec, close and restart Windows Movie Maker, and then try to import the file again.I've tried closing and re-opening the program but it didn't work. Suggestions please. :)

-question by Katie-Anna Jackson

if I were all of you I would delete window media player ...I will not use window media player because of all the issues you guys are talking about...I took adobe flash player and VLC player...Downloaded both and now can download anything off the web anywhere and any place...It doesnt matter what kind of movie or if its youtube...It all come thru...Thats what you have to do...Most videos are now coming out as flash drives and you have to have a flash player in order to download it ...Otherwise its not gonna work...Windows media player will not use flv files or other certain files...So get rid of it and go this way...Also the thing with the VLC player ...Has a much louder volume to it and sometimes will blow you away...It will download and run anything from no hd to hd and and from mps3 to wmvs...Its a good thing...Thats how I'm doing it...Other than I don't know what else to tell you except when downloading this stuff pay strict attention to how to do it...And you will get thru it like I did...