odd...ar you sure thats the right gateway? if not ipconfig /all and scroll to default gateway
but assuming that is the correct gatway why would it just start blocking you, disable the firewall? or maybe try accessing it through a different computer. Hope you find a solution
I have tried accessing from a different computer. Didnt work. And I am sure I am using the right gateway I checked it in the cmd. Well it seems that this need a professional's help,thanks for replying guys.