Looks like you have a petty program that messes with your Internet.
1.) Close all programs.
2.) Click Start, and then click Control Panel.
3.) Click Add or Remove Programs.
4.) In the list of currently installed programs, click Windows Internet Explorer 8, and then click Remove.
If you can't find a way to uninstall it, you can always hit the Windows Key + R, then type in "regedit", without quotes.
Go into HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > And delete the folder "Internet Explorer".
After that restart your PC and hope it worked.