Looking at your post, you have reinstalled many times, so isn't a problem on the game itself.
And looks like you have all the required programs updated as well, but do you have sure if your Windows is completely updated? Will be useless if the programs are updated if the main system is outdated, I recommend you check for it.
Also, is good have in mind about some hacks do not work on XP, it has a tendency to work on newer OS's, so if possible for you, try test the hack on Vista an Seven (obviously with everything updated).