Check if a program running in the background is interfering with Internet
Explorer. Temporarily disable all Norton programs, including anti-virus, win
doctor, recycle bin protect, and clean sweep. Does Internet Explorer work
properly now?
Disable any firewall or ad-blocker.
Perform a repair of Internet Explorer. From Control Panel select Add/Remove
Programs. Scroll down to Microsoft Internet Explorer and highlight it. Click
on the Add/Remove button. When the IE Tools menu comes up, select Repair.
Click OK.
If repairing does not work, uninstall and reinstall IE. At the same IE Tools
menu, select "Restore the previous Windows configuration". Then reinstall
Internet Explore.
You can also access the IE Toolbar by clicking Start > Run and type
rundll32 setupwbv.dll,IE6Maintenance