Please do not put your system back to an earlier state. Then I don't know where to start anymore.
Don't bother about your exclamation mark. I will remove it soon.
Let's start with a browser. It is your choice but i preffer Maxthon. That is the most stable browser i've ever seen.
You can download it here: http://www.maxthon.com/
Plese make sure you disable the sidebar. You can do thst by a rightclick on the down right corner on the radar > And in the menu disable sidebar.
About your 90 Processes: Yes that can be normal but we will figure that one out to.
What happend with the registry defrag? Did you get an error message?
Winos.