The keyboard stutters, the computer shuts down without warning, and it won't hold a charge. I feel like I threw over 600 USD out the window, and I want to do the same with this piece of crap. I've bought refurbished MacBooks before, always from Apple. I bought this one from Amazon, and it's the worst shopping choice I've ever made. At this point, although there are lights on the keyboard, the screen won't light up, and it's not from anything I did or didn't do. It was working 10 minutes ago. Sigh. Guess I have to buy another MacBook Pro, from another, better source.