I have a similiar problem.
Yesterday I ran out of battery juice and my laptop turned off abruptly.
Later I tried turning on the laptop with no success.
I was getting a black screen. Nothing was coming up. No Beeps, No prompts, No bios.
I followed DA3VE's suggestion to do a battery reset - and this worked like a charm.
Pulled out the battery, disconnected the AC charger, kept my finger on the power button for 30 seconds, then reintalled the battery, connected the AC, and walla > the laptop came to life.
I used it for 3-4 hours last night with no incident.
Shut it down and went to sleep with the AC charger and battery connected.
This morning tried to boot it with no luck.
Same exact behavior as yesterday, e.g.,
Power light on, wireless light on, Hard drive light comes on for a few seconds, battery light on when plugged in, fan on sometimes.
Nothing on screen - pitch black.
Tried the battery reset like I had done yesterday with no luck. Tried the battery reset about 10 times still no luck
Plugged it to an external monitor and toggled throught the function F4 settings but no signal on the external monitor.
It's almost like it is in a sleep mode and I can not seem to be able to wake it up.
Power issue? Video card issue? Motherboard issue?
Looking forward to your insight and words of wisdom.