Side-by-side configuration is incorrect in vista 64bit for all programs

In my Toshiba Satellite U405 laptop I am getting side-by-side configuration error. I use to record audio. It starting appearing on its own. I cannot launch any application. My internet is not working. Later on I installed XP on the second partition. There is no error on that. After searching on web about the error I found that for fixing this I have to install C++
redistributable 2005. When I try to run the setup I get another error related to Windows installer service. What should I do.

The error appears if there are different edition of applications installed in your system. You have to get rid of the error which is not proper. You can start with system restore. Because that is the only best way to fix it quickly but if that doe snot work then the option remains it to run full system recovery. Take your data bakup and then run the same.