Is it risky to upgrade to Yosemite? When starting up cold, I sometimes have to force-shutdown the computer 30+ times before it will get past the Apple logo screen without going grey or black. I'm not sure if such a major software update is a good idea given the circumstances.
It's still much too long to go without a computer, but it's worth it when you realise you've been coding for three hours and haven't lost a single line of code to a crash.
That being said, before I got the part replaced, upgrading to... was it snow leopard? the latest version of OS X, anyway, increased the frequency of the issue by rather a lot. So, possibly, hold off on your update?
I've looked into this a bit more and it looks like my comment is entirely unhelpful: mine is a mid-2010 MBP, so while our issues look similar, they probably are not. Sorry about that, I should have checked before.
This explicitly states that your warrantee for this very specific issue is extended to 3 years after date of purchase. I doubt you purchased a 2010 MBP in 2012...
Still, if this looks like what you're experiencing, get a genius bar appointment. It's free, and they have an automated diagnostic system that detects this specific issue (and others). If it's the same one, you might be able to talk yourself into a free replacement.
http://appleinsider.com/articles/14/05/13/apple-remains-mum-...
http://www.macrumors.com/2014/08/21/lawsuit-2011-macbook-pro...
Apple should have issued a recall and replacement program for this early 2011 MacBook Pro GPU defect a long while ago and now it's come to this.
I don't think Steve Jobs would call the impending lawsuit bad luck, he'd call it bad karma.