The operating system you're using? The browser? Have you tried making another site as your home page, such as Google. Does it work then?

Is the actual problem that you can't always connect to the internet? Or is it simply a home page issue?

Have you tried another browser such as the free Firefox? If not, please do so. It may be a browser issue...

Do you have the newest version of Java installed? How about the newest version of Microsoft's script engine? If not, please do so.

Do you have all of the most recent Windows Updates installed? If not, please do so.

Have you scanned the computer with a few antispyware programs? If not, please do so.

Hope this helps and let us know more.