Laptop won't turn on

Hello,
I have a certain problem, which has been, I think, for some of you resolved. My laptop just won't turn on. There is what I did:
1. Pluged out adapter and took out battery.
2.. I turned laptop face-down, held the power button for 30secs (and even 60 secs on time!)
3. Plug in adapter and turned on the laptop --> IT DIDN'T WORK.

Then i tried:

1. same as before
2. same as before
3. Plug in adpater and battery and then turned on the laptop --> IT DIDN'T WORK.

I don't know what to do anymore, so if there is any other solution or even other example of those i tried, please let me know. :(