If I shut down the Mac Pro G5 4.1, then in order to get it to start I have to unplug it, remove the cover, reset the motherboard switches. Then it will start. If I just press the switch on the front, nothing happens. How can I fix it?
4x2.93 MHz, 8 GB ram, OS 10.6.8
Mac Pro, Mac OS X (10.6.8), 4.1
the 4,1 from 2009 should not need this type of handling.
AppleCare 3 yrs still in force?
PSU is doable.
But have you done an SMC Reset? www.apple.com/support/macpro
And it is Mac Pro but w/o G5 (those ended in 2006 and used non-Intel processors.
It is an early 2009 G5.
Yes I have tried the SMC Reset
And I replaced the round motherboard battery
One I go through the above scenario, the PSU works fine.
Checked and it is under AppleCare. I can check them next. Was hoping for a simple fix
There is no such thing as a "G5" anymore, and Mac Pro means "Intel inside" (Xeon processors) rather than the PowerPC IBM 9xx series used from 2003 thru June 2006 (and did not have "4,1" as model ID designations.
The PRAM battery.
The 1,1 and 2,1 had a Reset SMC button on motherboard - above PCI #4 and below or behind drive bay #4 (have to remove both items if present) to access. Not iin 4,1 2009s.
For those unplug, remove cables, hit power button for 8 seconds, release. Plug it in and hit power button.
the old method of unplug for 10 minutes never worked, sometimes if you let it sit overnight. And the first motherboards were built and designed back in mid-2005. And a reset button was needed.
Thanks for your replies, but I am still perplexed.
"For those unplug, remove cables, hit power button for 8 seconds, release. Plug it in and hit power button. " did not work. I then unplugged, pressed the white button on the logic board next to the battery, plugged back in and hit the power button and it works. ??
What does the white button next to the battery do?
I took it to MacCafe and they replaced the case in order to replace the power switch and this fixed the problem.
When I go to system profiler, under Model Identifier it has MacPro 4.1
Do you know what the reset switchs on the motherboard does? Why would the power suddenly come on?
Also, this does not fix the problem. The next time I shut the Mac down, I have to go through the process of unplugging the Mac, hit the reset button, plug it back in and then hit the power button.
I have the same problem with the same Mac Pro 4,1. Did you ever find the cause of this issue?
Thanks
I called apple support and they couldn't help me. I am waiting for the user to clear off the data and then I am taking it in as it is still under warranty. For now, we leave it on.
Thanks for the quick reply. I also talked to the people at the Genius Bar and were not able o help. I'm schlepping it to the store tomorrow.
nadeen, did you find out what was the problem? I was going to take this one in today.
To start Mac Pro 4.1 need to unplug, reset motherboard. Why
