How old is the Mac Pro? Have you had this issue before? What happens (blinks, sounds) when you press the power button? Open the side cover and look inside when pressing the power button to see if you see any lights or hear the hard drives spinning..
How old is the Mac Pro? Have you had this issue before? What happens (blinks, sounds) when you press the power button? Open the side cover and look inside when pressing the power button to see if you see any lights or hear the hard drives spinning..