to BC gusty
First a piece of advise : Two antivirus will do more harm as they do good. The real time protetion of these two will gice you conflicts and give more problems than protection.
Download install and update CcleanerAttention : the installation package comes with the Yahoo toolbar
if you do not want that you have to, untick the box accepting it during installation process.
After installing and updating go to options - advanced and tick prompt for registry back ups
Now Start up in safe mode
Do two runs
1) Click on problems and tick all. Click on analyse. At the end you will be prompted for storing a backup.
This will be stored, as a default, in My documents.
2) Click on cleaner click on analyse and accept all files to be removed.
step 2 Download Windows Installer CleanUp Utility 1.0 - Remove Windows ...
Run this tool and see what happens
Please post back how you are progressing.