If you have internet explorer, look for a bar that has File,Edit, View,Favorites, Tools, and help. If you don't see it, right click on any gray part under your address bar and click on menu bar. Click on View and
go to toolbars. uncheck the tool bar that keeps giving you problems.
Next, go to google and download spybot search and destroy. Here's the link: http://www.safer-networking.org/en/download/index.html.

Once installed, install it and follow the onscreen directions. If you need more help, you can pm me and I can help you further.