How do i stop web page error boxes

The issue here is not the boxes, it's whatever the actual issue is. It's like buying earplugs so you don't hear your car troubles.

What sites are having issues and what are the error messages? Is it all web sites? Have you run the MS updates to make sure Windows is up to date? Try using Firefox instead of I.E. if that is what you are using, that can help without the need to actually re-install everything.