I can go to every other website except for facebook. I try every other browser in my computer but the only thing I can see is HTTP 500 error and 404 Not Found. I tried clearing cache history and cookies, enabling  cookies, checking my modem, make sure my firewall permits me to access this web and even pt 's' in front of 'http' but it still dosent work. I can go to facebook with my dad's laptop and my handphone but not with this computer, why?

I can go to every other website except for facebook. I try every other browser in my computer but the only thing I can see is HTTP 500 error and 404 Not Found. I tried clearing cache history and cookies, enabling cookies, checking my modem, make sure my firewall permits me to access this web and even pt 's' in front of 'http' but it still dosent work. I can go to facebook with my dad's laptop and my handphone but not with this computer, why? == URL of affected sites == http://www.facebook.com