2009 MacPro 8-core will not restart after crashing/shutdown

The MPCist · 27th January 2012

I've got a very weird problem: If I crash or shutdown, my computer cannot start up without literally pulling the power plug out and waiting anywhere's from 15 min to an hour and it will start up again. Other than this problem, it works fine.

It's a 2009 Mac Pro 8-core 2.66ghz, 12GB RAM running PT HD3accel.

I've tried:

PRAM reset, permissions/disk repairs, etc... nothing fixes it.

Sent it to Mac Repair... tests came out 100% okay.

Sent it to another Mac repair center, best in the city, and tests came out 100% okay.

Bought a new HD and installed a new OS... still the same problem.

Anyone have any ideas?

engmix · 27th January 2012

Quote:

Originally Posted by The MPCist

I've got a very weird problem: If I crash or shutdown, my computer cannot start up without literally pulling the power plug out and waiting anywhere's from 15 min to an hour and it will start up again. Other than this problem, it works fine.

It's a 2009 Mac Pro 8-core 2.66ghz, 12GB RAM running PT HD3accel.

I've tried:

PRAM reset, permissions/disk repairs, etc... nothing fixes it.

Sent it to Mac Repair... tests came out 100% okay.

Sent it to another Mac repair center, best in the city, and tests came out 100% okay.

Bought a new HD and installed a new OS... still the same problem.

Anyone have any ideas?

Is there a PRAM Battery in those Mac's? If yes, change it out for a new one....could be dead.

The MPCist · 27th January 2012

Quote:

Originally Posted by engmix

Is there a PRAM Battery in those Mac's? If yes, change it out for a new one....could be dead.

I'll check that next week.

But Date & Time works well so I don't think it would be the battery since PRAM keeps that, right?

kgdrum_nyc · 27th January 2012

Have you ran Disc Warrior? If it's a permission problem,it can spot and fix things repairing permissions in disc utility might miss.

OwDU7 · 27th January 2012

It must be a HW related problem, no SW related issue would be solved by unplugging and waiting. Do you have PT HW installed? I say this because apparently the Apple HW has been tested.
Z.

ancientprotector · 27th January 2012

Tried resetting the power manager? That's what it sounds like to me, or your logic board or power supply could need replacement.

kgdrum_nyc · 27th January 2012

It could be hardware related as the 2 previous posters stated but 2 shops who actually tested the Mac say it's not.
I have had the power supply and logic board go on my G5 when I had weird startup & fan issues,Tekserve in NY figured it out immediately.
Hard to tell with out actually testing, if there was a power supply or logicboard issue and 2 shops missed it ? i would be surprised, they make $$ finding repairs.
all I know many times I have had issues that I initially thought were hardware related and I was wrong, it was permission related

Jus · 29th January 2012

Power supply is breaking down I guess. Sounds quite a bit like the problem I had with iMac.

Note: Apple genius bar did not find it out the first time I took the machine to them. At that point it was not broken enough (the test showed 100% okay, we could not reproduce the problem there)

27th January 2012	#1
The MPCist Lives for gear Joined: Jul 2003 Posts: 4,536 Thread Starter	2009 MacPro 8-core will not restart after crashing/shutdown I've got a very weird problem: If I crash or shutdown, my computer cannot start up without literally pulling the power plug out and waiting anywhere's from 15 min to an hour and it will start up again. Other than this problem, it works fine. It's a 2009 Mac Pro 8-core 2.66ghz, 12GB RAM running PT HD3accel. I've tried: PRAM reset, permissions/disk repairs, etc... nothing fixes it. Sent it to Mac Repair... tests came out 100% okay. Sent it to another Mac repair center, best in the city, and tests came out 100% okay. Bought a new HD and installed a new OS... still the same problem. Anyone have any ideas? __________________ THE MPCIST

27th January 2012	#4
kgdrum_nyc Lives for gear Joined: Nov 2004 Location: NYC Posts: 564	Have you ran Disc Warrior? If it's a permission problem,it can spot and fix things repairing permissions in disc utility might miss. __________________ 2.8 Quad Intel(2008)MacPro24 gig ram,OSX10.68, DP7.24, RME fireface 800,Great River ME-1NV preamp,Rode NTK and AT4033 microphones,NI Komplete 5&6,Spectrasonics IK etc and many more VI's and plugs... Vdrums (TD20 expanded) Superior 2 etc..., XP30,Akai Z8, Focal Twin 6 monitors, Shunyata PowerSnakes and Conditioners,too many hard drives... ESATA

29th January 2012	#8
Jus Gear nut Joined: Jul 2008 Posts: 112	Power supply is breaking down I guess. Sounds quite a bit like the problem I had with iMac. Note: Apple genius bar did not find it out the first time I took the machine to them. At that point it was not broken enough (the test showed 100% okay, we could not reproduce the problem there) __________________ If you want 10 % off of your first FabFilter plugin, pm me your email and I will ask them to send you a discount link.

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27th January 2012	#5
OwDU7 Gear nut Joined: Mar 2009 Posts: 90	It must be a HW related problem, no SW related issue would be solved by unplugging and waiting. Do you have PT HW installed? I say this because apparently the Apple HW has been tested. Z.

27th January 2012	#6
ancientprotector Gear interested Joined: Jan 2012 Posts: 1	Tried resetting the power manager? That's what it sounds like to me, or your logic board or power supply could need replacement.