I have camera video clips saved on my computer that I always use to beable to open, now none of them will open. I click on the video clip, a file download box comes up, reads, Name: Movie.wmv, Type: Unknown File Type. I click run, then a Windows box comes up and reads, Windows can not open this file Movie.wmv. This never happened before, they always opened. I tried opening them in other ways, Quick Time, Windows media Player, nothing. I had a Vundo Trojan one time a had to delete alot of things to get rid of it, could I have deleted something that I need to open these videos? Thanks......

What did you have to delete when you had that trojan? What OS do you have? What exactly is the error you get when you try to play it in media player? What version of media player do you have?

.wmv files are usually associated with Windows Media Player (WMP). If WMP isn't opening/playing the file, you may need to set the file association, or you may need codecs (re)installed.

Per townsbg:
What OS do you have? What exactly is the error you get when you try to play it in media player? What version of media player do you have?

Please answer the questions posed, and post any new questions you may have.

As an aside, (myself) finding WMP to be a resource hog and too controlling, I use Media Player Classic, from K-Lite. It plays many file types without a hitch.

K-Lite Codec Pack - Wikipedia, the free encyclopedia

k-lite - Google Search