Screen and keyboard not working on start up

When I turn my laptop on, the fans start up and it sounds normal however the screen doesn’t turn on and the lights flash on the keyboard for a second then go off, the lights on the keyboard such as the caps lock and num lock don’t illuminate when pressed. Therefore if the keyboard is also not working I can’t use any of the usual fixes for a black screen issue on Toshiba laptops.

my laptop model is Satellite L50-B

Any help would be appreciated