No video running in windows 8 consumer preview..! (Video App nt workn)

Hello Guys..!
I'm facing a serious problem in my windows 8 cp...! I have a dual booted my windows 8 with windows 7...
Everything was going fine but from last 2 weeks my video app isn't working... whenever i play a video thru my video app the audio of the video is played n the app hangs after 10 seconds of video play...!

When i try to play that video through windows media player only the audio is working... no video comes...!
If i play that same video in VLC media player it plays fine..! It happens with all format of videos...!
Please help me...!

Also no video on youtube is played..! Only a green screen comes with audio of the video coming...!
Happening with all the videos on youtube played through all browsers (Firefix, IE etc.)...

Please help me with this video playback problem asap....!

Hey,

Install fdshow and it will make WMP play your videos well.

Install latest Flash version for both Firefox and I.E >>> Download Flash Player 11.3.300.214 Beta 1 (Non-IE) - FileHippo.com

Then after, clear the LSOs super-cookies with this page: AdobeClearFlash

As for the Metro video app, I have no clue because I don't use it and don't plan on it either.