First, I'd recommend uninstalling any unused programs from your computer and cleaning off any old data. Then install and run CCleaner (download here
). This will help to remove less obvious temporary and unused files. All of this will remove some of those reported viruses and warnings, as well as improve scan time.
Next, I'd re-scan the system over and over until it comes back clean. Make sure you have everything else closed when you scan and just let it run. If you scan it more than three times with no change in the results, then you may need to try another program to remove the infestation.