Windows Media Player 12 won't work at all.

My WMP12 used to work. but nowadays, what it does whenever i try to open it is show its window for like 20 milliseconds, then close. My Encarta 2009 doesn't work well, it says it needs the WMP to play, so does my desktop gadgets. I think something happened. i tried using sfc/scannow but even it cannot solve the problem. i don't know what to do. I am currently in dilemma because most of the Win 7 features rely so much in wmp12. how am i going to use it if doesn't work?

P.S. i also tried turning on and off media feature pack. it doesn't work. I am currently using Win 7 Ultimate, 2 GB ram, 1 GB vid card and Intel Duo P6100. my laptop is just a month old but its system is like failing.
please help me...

let me rephrase that, the window doesn't show at all... whenever i try to open it, it doesn't show at all...

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