What does the K-lite pack do that screws up systems? People here are saying FFDshow is the thing to use and that's included in this pack
Treat codecs as translators, FFDShow does Divx/Xvid\MP4 and a few other bits.
Then you have installed Your mpeg2 codec.
Right all these things are translating what you have playing, example of what i am trying to get across is one word in English, may have with the same pronounciation, but another totally different meaning in another language, so the more Translators you have on your system, the potential for a mistake in what was meant is likely to happen.
I would say that most of us, who abuse\use a PC's capabilities have had to reinstall there OS because of a corrupt codec at sometime or another. (Twice )