Toshiba sat c655-s0582 won't load the BIOS

Hello,

I have a Toshiba Satellite c655-s0582.

My sister dropped it down 3 months ago and just shooted down. Turned it on again and everything was working perfect.

5 days ago I was working on it and shoot it down as normal. Next day I tried to turn it on but nothing happens, theres nothing on the screen, the BIOS won't load, all I hear is the cooler fan and the it shoot downs it self, and from the time I press the power button to the time it shoots down theres only 6 secods.

Tried to turn it on without the battery and plugged in thinking on a battery problem, but stills not work.

Tried to plugged it into a monitor thinking on a LCD problem, but theres nothing on the monitor.

Tried changing the RAM to a different DIM, but stills not working

And finnally changed the BIOS battery, but stills not working.

Any idea?