A repair install of Windows will frequently overwrite registry entries or files that were needed to correctly run various programs..If a "repair" option is available during the uninstall process of the program, then try it..If no repair option is available, you may need to uninstall the program, then reinstall it.
Likewise with drivers..After a repair install, you'll commonly need to update drivers such as video, audio, ethernet, etc.
Hope this helps.
Let me start off by saying I just did a repair install and finally got my computer back up and working everything is working great except one thing. When I try and run a program such as mIRC (www.mirc.com) the mouse pointer does the "thinking" like it is going to launch it but never does anything. This is also the case with music I try and play won't work and when I try and launch Steam and play Counter-Strike or any game it is doing the exact same thing thinking when it says "Preparing to Launch Game" but it never launches it. Help would be much appreciated.