LiveUpdate issues/will not update

Hi, this is my first time on here, so please bare with me! I may have contracted a virus or tracking cookie from a website, so I immediately closed my browser and went to Norton to run a quick scan. That usually catches whatever is causing the trouble, then things run smoothly after that. My suspicions were first raised when the quick scan had problems and wouldn’t work, then the LiveUpdate wouldn’t work, and now it seems that something is just kind of trying to eat at my system from the inside out. I think if I can get the LiveUpdate to work its magic, then I can finally do a proper scan and get rid of the issues, but LiveUpdate refuses to do its job for me. I’ve been continuously clicking on LiveUpdate and letting it run only to find that it fails to properly update, so I click the “Summary” link to get more information. Here’s the kicker. The list of items there (i.e. Web Protection Definitions, Pulse Updates, Web Protection Definitions hub, etc etc) constantly changes. I try to get support for these by clicking the “Get support” link, but nothing happens. I’ve honestly tried everything and nothing is working. I’m just grateful my browser here seems to still work so I can get on here and post. So, has anyone else had the same issue? What do I need to do? Thank you so much for any help on this, I’m so frustrated!