Try the add ons and make sure Flash and Java are enabled providing that you use them.
Or try tools.Internet Options .Advanced.and press reset.That resets Internet Explorer to its original state.
you will then have to go into add-ons and enable everything again.
Also if you use spywareblaster go back in there and make sure everything is enabled.
Maybe download Firefox and use that until you get I/E fixed.
Not sure if Norton has changed but a few years back it was a waste of time switching the Firewall off you either had to check the Firewall was Ok or remove Norton completely.