5 minutes after I start my computer up, my internet browsers can no longer visit any sites. However, the rest of the internet, such as games and chat programs still work. The only way to temporary fix the problem is to restart, so the browsers can work for some more minutes. I have used 3 different browsers and it's the same with them all. I have another computer in the house but it does not have the problem. At first I thought it was because my firewall but I have not touched it in ages so I doubt that's the problem.