Many people in the UK have written about avoiding Norton at all costs as it seems to cause all kinds of problems. For many years now I have simply used Microsoft Security Essentials as my antivirus system. It is free and directly available from MS and seems to run nice and efficiently in the background. I am sure other will chime in also about Norton.

Sorry to hear about your problems I am sure PG will sort you out. In your circumstances might be better to disengage from the internet when you are installing and disable any antivirus at that time.

If you do decide to uninstall Norton you will need to download a special tool from Norton to properly remove everything. You cannot operate two antivirus systems at the same time and if you don't remove all traces of Norton it will conflict with any other antivirus system you install.