at the end of chapter 6, after I shoot the bad guy the game reloops to the start of chapter 6 instead of going to chapter 7.

I am using a new rebuilt system with win xp, athlon x2 5050e, geforce 8300 with 512mb gpu memory integrated on motherboard, 4gb ram

I replayed the chapter and it went on to chapter 7 ok, problem solved.

I had the downloaded version. to anyone who has trouble installing it. I copied the files directly from the download into the program files directoyr, from the download because it wouldn't install all the files.