I need help!!

[540-MAN]

Hi guys I need some help on this, I can't access this site on my home computer it keeps coming up as this website can not be found. I checked the spelling of the website link about 3 times and comes up with the same thing over and over. It only started doing it when I downloaded AVG anti virus as my nortons expired. The only way I can access it is on my iPhone.

Just wondering if anybody can pin point the problem of what it could be.

Thanks
Shaun