Couple of other things to try....
I assume, you can go to some web pages, but not secure ones, like E-Bay, right?
Go Tools>Internet Options>General, and delete Temp files.
Go Tools>Internet Options>Security tab. Scroll down to "Scripting".
You'll see 5 subdirectories. Make sure, that "ticks" are set as follows:
- Enable
- Prompt
- Disable
- Disable
- Enable