g62 problem

So i have a laptop - g62-a10sq
When i tried to power it up today the screen just remained black. The wifi led is orange, the caps lock key isnt blinking and when i push it just goes white...then if i push it again goes off.
I tried pushing f10, i dont remember clearly, but i think that thats the bios key, anyway, when i press it like 15 times rapidly the laptop beeps a few times and then when i press any of the common buttons, like any letter or an F key, from f1 to f10 it beeps on each push. Also beeps on arrow up and down, doesnt beep on left/right. Doesnt beep on the delete or any of the keys on the left - the calculator/mail buttons...etc.
I dont know whats wrong...is there anybody who can help me?
Oh and i tried unplugging the power cord and battery, holding the power key and plugging the battery back in and turning it on...doesnt work. Also the hard drive is formatted - there's nothing on it but it still doesnt work. I have tried connecting a monitor to the DVI output - doesnt work either.