My iMac is about a year old, for a couple of months my iMac has been crashing on and off, it will randomly shut off then when I keep trying to turn it on it won't stay on long, I've tryed resetting smc, new key board, ram sticks , moving the Mac, but nothing works. I've brought in in numerous times but they say nothing is wrong. I'm open to any suggestion.
I've tryed safe boot and single user, but won't stay on
I've tryed safe boot and single user, but won't stay on