You may want to look at
this earlier thread with related issues. In truth, there is no efficient way anyone can sus out the problems an individual user is having on a personal computer that has had its system modified by various programs, changes to the registry, etc.
I nearly tore my hair out with a problem I had on my machine at work. I finally decided to bring the thing home and do a reinstall of the OS. I am sure there was some minor change that could have been done to solve my problem, but I sure could not figure out (after months of trying all manner of things) figure out what it was.