Hi Many of my video games from various manufacturers will begin to install but will hang somewhere during the installation. My computer doesn't freeze and I can cancel the installation but it will just sit there for hours without moving forward past a certain point. This occurs with most games, including newly released games I try to install. This happens when I try to install GTA4, Fallout 3, Crysis Warhead, etc. I turned off the UAC in Vista Ultimate. Other than that I have AVG free antivirus installed and no other security products that I can see that would cause problems. I have even ran the installations in Administrative mode but the problem continues to exist. I think it's something in Vista, maybe DEP but that usually just shuts the program down if it's activated. I really don't know what could be causing it. Thanks for your time and kind help.

Firstly, just want to check and make sure that you're certain your system meets the minimum requirements for this game. Secondly, do you have two CD/DVD drives? All of the games you mention contain SecuRom which causes huge problems for people with two CD/DVD drives as SecuRom immediately sees the second drives existence as an attempt to pirate a game (ridiculous I know). If you scan your system, including viewing hidden folders, you should find SecuRom there. If it is and you have two drives, contact the games distributors to see if there is a way to install and run the games despite having two drives.