Toshiba Satellite L655D won't boot

[wildbill.richards]

With battery in and power supply plugged in I see power light and battery charge lights on. When I hit the power button the Numlock and Capslock lights blink once and the power on light lights up. Nothing comes up on the screen. Same response when hooked up to an external monitor. Breaking open the case I've unplugged various components to eliminate them from the equation with no effect. Any suggestions appreciated. Thx - Bill

 

[webworkings]

If it powers on, but no display will (attached or external) turn on, then you likely have a bad GPU and may well need the motherboard replaced.