I read through this again. I'm not 100% confident in that being the root cause of your problems, but it could be the case. IO error just indicates a failed read or write somewhere, but the 2010 15" models do have a couple known problems. Looking at the year I thought gpu at first, yet I've never experienced a grey screen due to gpu problems. If you've performed ram upgrades it would be prudent to test it as well. As for SSDs, this is what I would personally buy. I've had...
6/1/14 at 8:32pm