7 Replies Latest reply: Oct 22, 2012 10:59 AM by Grant Bennet-Alder
-djbolt- Level 1 Level 1 (15 points)

All the information I have:

 

I've been out of town for a week, so I unplugged my Mac Pro for the time I was gone.

I got back this morning and plugged it in.  It started normally.

Updates were available.  I installed them which required a restart.  I restarted.

Now the Mac Pro will not come back on.  It seems to alternate between just not responding (alhtough it seems the insides are starting up nothing comes on the screen) or sometimes it chimes and comes up with grey boot screen then goes to black.

 

Please help!  I have tried to reset SMC controller by turning off, unplugging the power for 15+ seconds, plugging back in the power, waiting 5+ seconds and hitting the power button and then it chimes, brings up grey boot screen, then the screen goes black.