My MacBook Pro is not booting at all. I try to power it on and I hear the optical drive spin but no chime and the screen remains black. The battery indicator light on the side works as does the keyboard(caps lock lights up). After about 5 min of nothing it automatically shuts off. I tried resetting the SMC and same issue. I replaced the RAM sticks and still same problem. I then removed both RAM sticks and tried to boot up and got several beeps upon powering up. I am thinking it is the logic board or the GPU after looking around the Internet. For the past few months I've had this problem intermittently. I would power on and I would get the chime but a black screen for a couple minutes before it started to boot correctly but this is the first time I haven't gotten the chime. Would it be a battery problem? Logic board battery? Any advice would be helpful. Thanks!