How to Fix a Browser Virus
A virus can affect any of your computer functions, including your Internet browser. You may have to do some troubleshooting to see if it's a virus that is affecting your Internet browser or another problem. Browser problems can include inability to open a browser or downloading files. It's common for your Internet browser to experience problems from time to time, but if they persist, it could be something more serious and require the help of an anti-virus program.
Open your Internet browser and click on "Tools."
Select "Temporary Files" and click on "Delete All." Also delete the offline content. This should delete any temporary files that may be carrying a virus affecting your browser.
Shut down all the programs that you are running, such as Windows Live Messenger or Skype. These programs could delay the browser function.
Update your Internet browser with the latest version. You may be using an outdated version.
Open and run your anti-spyware and anti-virus software.
Restart your computer and open the Internet browser to see if it is still experiencing problems.
Reboot your computer in Safe Mode if you are still experiencing problems. You can do this by repeatedly pressing F8 until a menu pops up.
Select "Safe Mode With Networking" and press Enter.
Open your Internet browser and click on the "Tools" menu.
Select "Internet Options" and click on the "Connections" tab.
Click "LAN Settings," uncheck the box that says "Use a Proxy Server for Your LAN" and click "OK" and "OK" to exit both boxes.
Download and run a virus remover for Internet browsers.
Restart your computer and test your Internet browser.