Need Help/Advise?

[eyedoc_00]

My 2009 iMac turned off by itself. May have been due to a power outage. It will not turn back on. When i hit the power button, I hear the mac chime sound and the apple logo shows up on the screen. After about 1-2 minutes it shuts down. I have tried to start in safe mode and the same scenario happens.
Any thoughts?
Thanks in advance for your help/advise.

 

[satcomer]

I had This happen to me on my 2008 Mac Pro. What I discovered it was my Display Port cable. So when I unplugged the cable it started normally again! So if you have any Display or Thunderbolt cable plugged in try disconnecting them and try to boot up!

 

[eyedoc_00]

I had This happen to me on my 2008 Mac Pro. What I discovered it was my Display Port cable. So when I unplugged the cable it started normally again! So if you have any Display or Thunderbolt cable plugged in try disconnecting them and try to boot up!

I do not have any displays connected. Thanks.

 

[DeltaMac]

It's a fairly common issue that a failed/failing hard drive can cause a shutdown during boot.

Can you boot to your hardware test?
Boot, while holding the D key.
If you can get to the hardware test, run both the standard, and extended tests.

 

[Fishrrman]

You could try this (no promises):

1. Unplug the Mac
2. If the Mac has removable RAM, remove it for 15 minutes
3. Put the RAM back in, plug in the Mac, try again.

 

[eyedoc_00]

It's a fairly common issue that a failed/failing hard drive can cause a shutdown during boot.

Can you boot to your hardware test?
Boot, while holding the D key.
If you can get to the hardware test, run both the standard, and extended tests.

Will try this when i get home tonight. Thank you.
[doublepost=1477328553][/doublepost]

You could try this (no promises):

1. Unplug the Mac
2. If the Mac has removable RAM, remove it for 15 minutes
3. Put the RAM back in, plug in the Mac, try again.

Will try this when I get home tonight. Thank you.