The following are the codecs I have installed (I read somewhere that this can cause issues). I removed the Xvid codec to no avail ...
ICM Microsoft RLEMRLEmsrle32.dll 6.0.6000.16386
ICM Microsoft Video 1MSVCmsvidc32.dll 6.0.6001.18000
ICMMicrosoft YUVUYVYmsyuv.dll6.0.6000.16386
ICMIntel IYUV codecIYUViyuv_32.dll6.0.6000.16386
ICMToshiba YUV CodecY411tsbyuv.dll6.0.6000.16386
ICMCinepak Codec by Radiuscvidiccvid.dll1.10.0.12
DMOMpeg4s Decoder DMOmp4s, MP4S, m4s2, M4S2mp4sdecd.dll11.0.6001.7000
DMOWMV Screen decoder DMOMSS1, MSS2wmvsdecd.dll11.0.6001.7000
DMOWMVideo Decoder DMOWMV1, WMV2, WMV3, WMVP, WVP2, WMVR, WMVA, WVC1wmvdecod.dll11.0.6001.7000
DMOMpeg43 Decoder DMOmp43, MP43mp43decd.dll11.0.6001.7000
DMOMpeg4 Decoder DMOMPG4, mpg4, mp42, MP42mpg4decd.dll11.0.6001.7000