Hi My PC is installed with Windows 7 Home Premium 64Bit, and i have a 1.7Gb HD WMV VC-1 file. When i attempt to playback on Windows Media Player it takes a long to time to seek/skip forward. I also installed GOM player and VLC, both have trouble playing the file, VLC actually crashed on one occasion. I am sure my PC is capable of carrying out this task, it recieved a 5.9 on the Windows Experience Index. What could be the problem? Thank You NOTE: I have not installed any codec packs.