Hi, I have Win. XP, Window Media player 11, Win-Amp the latest version. None of my AVI movies work in any of playter - WMP, BS Plater VLC etc. I had installed and reinstalled codecs - such as ACE mega codecs, Tsunami, K-lite. My problem was that I had to reformat my hard drive due to some problems. I have reformatted my harddrive many time before this time, the avi movies from my external hard work but not this time. This external hard drive is new. I read some replies and searched for solutions nothing help. I am a newbie. Please advise. Thank you.