blank screen when starting up laptop

God.. I hate to return to this forum (sorry nothing personal =P, but I don't want to have any problems with my laptop ) Anyways when I start up my laptop this morning. The screen was blank/black as it didn't turn on, but it did. I could open the dvd drive. I tried running my laptop without my battery so just only the adapter, still same thing but the weirdest thing was. It could randomly turn on by itself when I close my laptop and num lock and caps lock was also on.

The following steps will rest your hardware/software connections through the BIOS and clear the temporary memory of any corruption.

1. Shut down and turn off the computer.
   
2. Unplug the computer from the wall or surge protector (then remove the battery if it is a laptop).
   
3. "Remove the computer from any port replicator or docking station, disconnect
   cables to printers or devices such as external monitors, USB memory sticks or SD cards, headset or external speakers, mouse or auxiliary keyboard, turn off WIFI and Bluetooth wireless devices." (Use Hard Reset to Resolve Hardware and Software Issues HP Pavilion dv5000 Notebook PC series - HP Customer Care (United States - English))
   
4. Hold down the power button for 30 seconds. This closes the circuit and ensures all
   power from components is drained to clear the software connections between the BIOS
   and hardware and clear any corruption in the temporary memory.
   
5. (If it is a laptop, plug the battery back into the laptop and then) Plug the computer back into the wall. Do not reconnect any unnecessary peripherals; monitor, keyboard,
   and mouse should suffice and be the only peripherals reconnected.
   
6. Turn it on to reinitialize the software connections between the BIOS and hardware
   

I did it like 4 times and it's still the same =(

Is the laptop still under warranty?

Have you tried using an external monitor or TV screen to see if it is a bad screen on the laptop?

Didn't work, still a black screen. So I guess this means my laptop is dead? What could have been the cause?

It sounds like something related to the display shorted on the motherboard. Once that happens, there is only one recourse and that is to have the motherboard replaced by the manufacturer. That will probably cost between 60-80% of the original price of the laptop.

If you need to get the data off the laptop, there are external enclosures available for the hard disk that you can buy and use to transfer files on another computer.

I know it's a long time since the last message, but a little update: My laptop works! But without the harddrive lol... I can see again on the screen, enter bios, switching to a external monitor. So there is this guy who said that the black plastic sticking out of his harddrive was his problem? Or any other suggestions?

Here's the link of it [SOLVED] ASUS K42Jr black screen no BIOS no HD access light - Tech Support Forum