Delicate dude. try following. i think it went to TV Mode. i had same problem before. usually this happen when you press Fn+F5 on key board. you can switch pc mode by pressing Fn-F3, or Fn-F5, or Fn-F7 on keyboards not sure depends on brand. No picture on the laptop screen. Most newer laptops have a 3-state toggle function to switch between internal, external and dual display. It is usually Fn-F3, or Fn-F5, or Fn-F7. Try this function waiting each time for a couple of seconds to see the effect. Some older laptops do not support dual display function.