yourweld,

Under the circumstances, including that you might be running without a firewall since Norton AntiVirus does not itself have one, I'd be inclined to check your system with a full system scan

My first thought was that malware that may have gotten through to your system and so to run one or both successively of these two malware cleaner-uppers:

Malwarebyte

Superantispyware

I'm assuming of course that you can effectively and safely access the internet if necessary on a different computer.

Download and install the free versions since they do all you need by running on command, not in the background. Be careful that you do chose the free versions.

Then update them to the latest definitions and run them in turn.

Both have a good reputation for cleaning up.

If by any chance they refuse to install or won't run after installing because malware is preventing them you can sometimes defeat the malware by changing the name of the exe file to anything except its real title!

Please let us know how you get on.