What is apple's ASD EFI test? From what I gather its a more lengthy stress test of the hardware comparing the simple test apple does while at the Genius Bar. What is it checking? I dropped my Mac Pro off for service today and they advise doing this test and they reinstalled OS X. I dropped off the computer around 11:30. They called me at 3PM to tell me it was ready... How can this be? I was quoted for having it take 1-3 days. How long does it take to run the diagnostic and install OS X? It seem to quick of a turn around. When they ran the quick hardware test, it came up that my graphics card failed. (it doesn't say which one) but that something failed. Because they never see a Mac Pro when he went in the back to check on parts etc. he was told that on the 2013 Mac Pros it always fails. I thought Apple designed and coded this test knowing the Mac Pro would always fail... I'm concerned because my apple care expires in the end of February and I don't want it crap out on me in March.