I have a mid-2009 17" MacBook Pro. A few months ago, I was getting endless freezes and immediate shutdowns. I would just be working, or surfing the web, and the laptop would simply freeze in place. Or, after putting it in my bag and going to work in the morning, upon opening, it would stay on for about one second, then immediately shut off. Both issues required a hard restart. I finally got so fed up with the 3-6 freezes every day, that I completely wiped the hard drive clean using a "write zeros" erase, followed by a mavericks install. At first, it seemed alright. But now, the issue is back. In fact, it's frozen twice in the last 15 minutes, and immediately shuts down every single morning when I open it from sleep. I could be wrong, but I think every time it's frozen I've been in Safari, possibly Google Maps. The shutdowns don't follow any pattern I know of. How do I find crash reports and figure out what the hell is going on with this machine??