Hi Olivia,
The error message Exeption_Access_Violation might be due to a variety of reasons. One of which is due to permission limits.
That being said, do you have administrator rights on your PC? Is your PC a personal PC or a work PC?
Can you tell us the websites you've successfully accessed?
How about using a different web browser? Have you tried it?
We'll be waiting for your response.
Regards.