In the future, you should try using a sandboxed browser. They isolate the browser so it cant install viruses on your machine from shady websites.
The website is
Sandboxie - Sandbox software for application isolation and secure Web browsing
You can also try Deep Freeze which you can torrent which sandboxes your entire OS. Basically you can only install things/save things when you "unfreeze" it. A companion program allows you to specify certain folders to keep unforzen like your my documents folder for instance.