Entering Servers

[DanteoftheApocalypse]

Ok I will calm down but i'm ticked because I can't play Graal anymore. I will now explain the problem: Every time I boot up a server one of those "This Program Has Performed An Illegal Message" pops up. The only thing is, every single thing thats has text or an icon dissapears on my computer, the desktop has all the items you can click on but the words dissapear and so does the icons. I cannot prevent this from happening in any way. Even when I do the ctrl+alt+del action all the words including "shutdown, restart, etc." dissapears. Nothing prevents me from doing actions but no text or icons appear, (ex. when i start up word and type, nothing appears but im typing). Please tell me how to fix this and I would be greately appreciative!