try running this........... download botton in the right top conner:
http://www.filehippo.com/download_ccleaner/
it will delete all your history and sort out any registry problems you might have. may have to run the registry bit twice if never run before.
i had a virus on my laptop from hotmail where it logged in automatically and sent a email to everyone in my hotmail account. this program sorted it for me and killed that damn virus!!!