Norton Internet Security not working on laptop with Windows 8

I've had NIS on my laptop with windows 8 operating system for a few months. Today, when I tried to go on my NIS application it wouldn't open. I'd click on it and nothing has happened. I've tried accessing it from different ways but it comes to the same result. I don't often go on NIS as usually everything seems to be running ok without me checking it, but I had a problem accessing the network on Google Chrome so I thought I'd check my Norton settings. I have tried switching my computer on and off again, but the problem remains. Any ideas as to why this has happened/any solutions?

Also, not sure if it is important, but the other day I used system restore on my laptop. Would this have affected it?