I don't know... and neither does google...
If you like you can try using these registry settings I pulled from my working registry. Paste the text below into notepad and save as whatever.reg then double click to merge the settings. Looks like you may have to reinstall windows or try finding a media player specific forum. Good luck.
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}]
@="ActiveMovieControl Object"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\InprocServer32]
@="C:\\WINDOWS\\system32\\wmpdxm.dll"
"ThreadingModel"="Apartment"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\MiscStatus]
@="0"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\MiscStatus\1]
@="131473"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\ProgID]
@="AMOVIE.ActiveMovieControl.2"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\ToolboxBitmap32]
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\TypeLib]
@="{05589fa0-c356-11ce-bf01-00aa0055595a}"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\Version]
@="2.0"
[HKEY_CLASSES_ROOT\CLSID\{05589FA1-C356-11CE-BF01-00AA0055595A}\VersionIndependentProgID]
@="AMOVIE.ActiveMovieControl"
[HKEY_CLASSES_ROOT\CLSID\{083863F1-70DE-11d0-BD40-00A0C911CE86}\Instance\{6BC1CFFA-8FC1-4261-AC22-CFB4CC38DB50}]
"FriendlyName"="Video Renderer"
"CLSID"="{6BC1CFFA-8FC1-4261-AC22-CFB4CC38DB50}"
"FilterData"=hex:02,00,00,00,01,00,80,00,01,00,00,00,00,00,00,00,30,70,69,33,\
02,00,00,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,30,74,79,33,00,\
00,00,00,38,00,00,00,48,00,00,00,76,69,64,73,00,00,10,00,80,00,00,aa,00,38,\
9b,71,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}]
@="Windows Media Player"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\InprocServer32]
@="C:\\WINDOWS\\system32\\wmpdxm.dll"
"ThreadingModel"="Apartment"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\LocalServer32]
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\MiscStatus]
@="0"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\MiscStatus\1]
@="131473"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\ProgID]
@="MediaPlayer.MediaPlayer.1"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\ToolboxBitmap32]
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\TypeLib]
@="{22D6F304-B0F6-11D0-94AB-0080C74C7E95}"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\Version]
@="1.0"
[HKEY_CLASSES_ROOT\CLSID\{22D6F312-B0F6-11D0-94AB-0080C74C7E95}\VersionIndependentProgID]
@="MediaPlayer.MediaPlayer"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}]
@="Windows Media Player"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\Control]
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\InprocServer32]
@="C:\\WINDOWS\\system32\\wmp.dll"
"ThreadingModel"="Apartment"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\Insertable]
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\MiscStatus]
@="0"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\MiscStatus\1]
@="131473"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\ProgID]
@="WMPlayer.OCX.7"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\Programmable]
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\ToolboxBitmap32]
@="C:\\WINDOWS\\system32\\wmploc.dll, 101"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\TypeLib]
@="{6BF52A50-394A-11d3-B153-00C04F79FAA6}"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\Version]
@="1.0"
[HKEY_CLASSES_ROOT\CLSID\{6BF52A52-394A-11d3-B153-00C04F79FAA6}\VersionIndependentProgID]
@="WMPlayer.OCX"