Cataloochee we're going to need more info. Specifically which browser? When you say working in internet site, wjhat do you mean specifically? Visiting one particular website? Or visiting random websites? What is the exact error you get? Post a screenshot if possible: Screenshots and Files - Upload and Post in Seven Forums
This could be a browser error, or a windows error, such as explorer stopped working.
Filling in your system specs could also assist us: System Info - See Your System Specs