I bought Norton Internet Security for my new laptop but the day after I installed it I went to view a youtube video and it didn't play, it just came up with a black screen. I Googled my this problem and it came up with stuff like 'Clear Cache and Cookies' 'Update Flash' and something to do with firewalls. So I cleared Cache and Cookies and my Flash was the latest one. I then searched on my laptop 'Firewall' and then realised that this problem could be down to the Security that I had just bought. I then checked my security status and it told me that Norton Internet Security was not on. So I re-booted my laptop and the Security was on, however youtube and other videos from the internet were not working and I have got nowhere. Please help!!