studio 1558 not turning on.

The light at the power adapter is on.

I removed the battery and power adapter, and held the power button for 30 seconds.

I held down "D" and the power button, and a grey screen comes on for about 1 second and goes off again, and then keeps doing the same for as long as I have the "D" and power button pressed.

There is only bar of light on the main battery.

The laptop is about 7 years old. I'm about to buy a new one when this one died. I do need to access some documents on it, though.

Any ideas?

Thanks!!