I can not get my screen to light up at all on my hp 2000 ALTIC lansing it has windows 7 on it. There is power because the power button lights up as weii as the caps lock button will light up and the fan runs. Now i have had the laptop on all the while but now isee the power button is flashing and the fan turned off but i can still hear the hum of the motor but still the screen will not come on , it is black, there is nothing not even a faint image, there is nothing.