|Default settings ought to let most common sites in. I have never had that exact issue.|
Might look at browser options to see if you have security set to the highest setting.
See this page. http://windows.microsoft.com/en-US/...
Could be that your ip addresses for dns have been set wrong or you have a bad hosts file full of generic requests to some bad site.
Get at least MS security essentials or a very good product to protect. Get a good hosts file, Learn and use as many best practices as you can.
May be that some port needed to authenticate the site is blocked or some service is bad or blocked.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.