HPM-Board

I have not been able to get on minecraft for the last week do to every computer I use freezing every time I enter my username and password. I have tried multiple computers and laptops, and I know its not the computers fault because it works fine with my friends accounts. If this has happened to anybody else, please help me so I can get back on the server.
Thanks
Giants

If freezing is meant to the mojang screen,
it is more a loading screen than a frozen one.
(Lags on my notebook as well, but its loading.)

Ya it doesn't even go to the mojang screen, it just stays at the login in page. I left it for an hour once and still nothing happened. Thanks anyway, hopefully I will find out the problem.