Well...a few months ago, i got a problem that Windows Media Player won't start when you double-click on it, neither Media Center starts.What happens is that we get a waiting pointer and it becomes normal in a few seconds.So the solution is:- Paste the following command in command prompt and voila u did it.... for %a in (%systemroot%\system32\wm*.dll) do regsvr32 /s %a If you have any alternate solutions, please post them over here.