My login server is broke or w/e. I was cleaning my house and I disconnected my modem-device. When I was done cleaning, I went to my computer to do some xp. But There was a login server connection error @ my launcher. So I restarted my modem-device, rebooted my computer and tried. Still, KO didn't work, and all the other Internet programs, such as: Internet Explorer, Steam and more of those did work, I just didn't get it and I still don't -.-

Please give me some advice on what I can do

PS: I also tried shutting down my firewall, didn't have any effect either.