Could you please calm down? Adding an arbitrary number of exclamation marks instead of commas and capitalizing random portions of your sentence won't make the problem fade away
Moreover without informations we cannot have any clue of what's happening, what video card are you using? Could you get to a console by pressing Ctrl+Alt+F1
when the screen went blank? What do you mean by constant crashing? Were those crashes happening during the Live version or after the installation process?
The more information you provide, the easier is to find out why it isn't working.