My MBP is an early 2011. At boot the screen is full of a strange video artifacts and never usually makes it past the boot screen. I tried this in windows with the same result. I've reset SMC, PRAM, uninstalled and reinstalled my ram, etc with no luck. I had this problem before and luckily was able to make it to the recovery menu to reinstall OSX and they did the trick. But this time I can't even get that far..... Check out the pic below. It's kind of crappy but you can see the artifacts if you look at the apple logo closely.