I have a Toshiba P774D laptop and today when I went to start it up, the screen didn't turn on. I hit the power button and it lit up but none of the other lights on the keyboard lit up and the screen remained black. The only 3 indicator LEDS that are lit up are the battery, power, and plugged in. The only sounds i can hear are the CD drive and the fans and that's it, it won't boot. Any help is appreciated thanks.