Daeva

Hey I have a proble, with my screen. Everytime I close it I guess it goes to sleep. I open it back up and the screen is black. I press the power buton, any key, or Fn+F4 and it still doesn't come up. I've tried changing video display. Nada. I just found out that when I click space or back space. It makes the ping sound. So I know it's running just, not showing anything. Any help would be definitely appreciated.
Thanks, Daeva