I just took my 15" RMBP Mid 2012 to the apple store this morning. I had screenshots showing the artifacting and explained that I am suffering from random restarts and scrambled screen. The genius was very nice and ran my computer through the normal hardware test as well as the VST test. My computer passed the VSt but he let me know that since the computer wasn't stressed for very long this may not show the problem. He suggested leaving it with them for a few days, 48 hours he said, so that they could run more diagnostics and put it through its paces. I left it there in hopes that they will see the issues I am having. I will update when I hear back from them.
It's nice to see some of the support team know that the VST is insufficent to show the problem.
It's nice to see some of the support team know that the VST is insufficent to show the problem.