Chris had been connecting an external monitor to it and he could use it that way for awhile, but now that doesn't work either. Leo says that it could be a frayed ribbon cable causing the laptop's screen to not work. The external monitor issue means that the video display subsystem on the laptop motherboard has probably gone bad. That essentially means replacing the laptop since it'll cost more to fix it.
Web5699 in the chatroom says it also could be a heat issue on the laptop.