Whenever I try to join the server, When I try to press ONE key on the keyboard, it Freezes and I have to restart ,my computer. One thing though, I tried to delete the server then re-do it again but its the same thing. Please Help!!
What do you mean don't press 1?
That's an issue with your computer not the server. Try re-installing Minecraft, without mods. I've not heard of anything like this happening before though so I'm not sure what could cause it. Perhaps graphics card drivers?