I have a 2007 MBP (Santa Rosa) that won't open unless I take a flat tool in between the screen bezel and the top case and manually remove the latches from their slots. When the little button on the front of the computer is pressed, nothing happens. I doesn't even 'push in', it just resists, no matter how hard I press. Has anyone else encountered this problem or have any ideas how to fix this? Thanks a lot!