My Mac Book Pro won't start up. I've tried the SMC reset (pressing shift-control-option, then power button) but it only results in the laptop playing the startup "chime" and flashing a white screen before powering down again. Any suggestions how to fix this?
MacBook Pro (13-inch Early 2011), Mac OS X (10.7.5)
You need to take your machine into your local Apple Store or an AASP. If the machine is 'powering down' on it's own, it's likely a severe hardware problem. You can try - and I do mean try - to run the Apple Hardware Test and see if you come up with any errors. That might help isolate the problem(s).