As a up and coming student in the computer programming world, one of my professors suggested AVG. AVG is a free product that gives great Anti-Virus support among other features. I would suggest possibly getting rid of your Norton and switch to that. Also, a great Malware program to look into is MalwareBytes. Make sure when you download these two items to check your system by running them in Safe Mode. In safe mode a lot of viruses that get imbedded into your registry and such don't have peramiters to activate in your safe mode and are easily contained and deleted.