My playstation 3 power button isn't working

I have a playstation 3 I've had it for two years now, so here's what I'm experiencing my ps3 powerbutton doesn't respond when I press it, but here's the thing I remember putting my ps3 in my closet and when I came back to get it out it was standing on its power button like it fell over and landed there and stayed that way the entire night, and after that the power button does not respond when I press it but it does turn on when I use the controller to turn it on, is there a way I can fix it? Or turn it on another way?