I had/have the same issues. Apple fixed mine once under the program and it lasted a few cycles then crapped out too. Apple said they would fix it again, sent me a box, shipped it, looked at it then sent me an email to cancel the repair order saying it was a vintage mac. Here is the rub, when they sent it back, the screen wouldn't come on at all. I see it on the network and can use screen sharing for a second but then it craps out then too. So with or without the built in screen, which i now sort assume apple disconnected then forgot to reconnect, the problem persists. It appears that apple sold a piece of crap and just expects it's customers to accept that they bought a disposable, unfixable, unmaintainable computer. They should at least return my computer in the condition it was in when i sent it.