Websites don't open-NIS 2012

I recently bought a Norton Internet Security 2012 and the problem I face is that whenever I try to open a website, The loading symbol appears normally, but in my system The loading symbol dissappears and the page is left blank, though the internet connection works properly, but , to get that page, I have to either open a new tab or Switch to the other tabs open,and then when I switch to the old tab the website appears. This happens all the time and I am fed up of this despite repeated formats.

Maybe this problem occurs because I download the software from my account? 

 

I use chrome and firefox. Though this happens only with chrome

 

 

The another problem is that Whenever I try to open Facebook, the fb chat option dissappears after installing nis 2012.

Please Help me!

 

 

Regards,

Mandeep