Safe Websites - Norton Logo No Longer Showing for ANY

I had a major comp issue that the Norton rep's remotely repaired for me.  Since they completed the repair, the OK, or Norton Logo, no longer shows up when I am searching the web.  Does that mean that everything showing up from a search is a safe site to enter?  Also since the repair, ads keep showing up when I'm in a site and I have to X out of them to see content in the site, but more ads show up over and over.  How do I stop that?  Thank you!