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2008 mac pro *UNEXPLAINED*

basslik

basslik

macrumors 6502
Original poster
Feb 22, 2008
468
106
good evening everyone.

I tried figuring this issue I have with my Mac Pro 2.8 quadcore 2008. Since I bought the Mac 6 years ago used. I've always had to unplug it from the wall outlet, and then plug it back in the wall outlet for it to boot up. If I were too fire up the machine without unplugging first from the wall outlet, then plug it back in the Mac will turn on and the fan will be roaring and never will boot. But if I unplug it, then plug it it back in the wall outlet, then turn it on it, it will start up fine as expected. I've even put another video card and the same thing. I ran a test on the components, and everything checks out fine. I'm stumped ?
 
Pulling the power cable IS the procedure to reset SMC in a Mac Pro... so it's not a matter of IF it persists (basslik has already stated it does), so it is clear the SMC or one of the related components is faulty.
 
basslik said:
good evening everyone.

I tried figuring this issue I have with my Mac Pro 2.8 quadcore 2008. Since I bought the Mac 6 years ago used. I've always had to unplug it from the wall outlet, and then plug it back in the wall outlet for it to boot up. If I were too fire up the machine without unplugging first from the wall outlet, then plug it back in the Mac will turn on and the fan will be roaring and never will boot. But if I unplug it, then plug it it back in the wall outlet, then turn it on it, it will start up fine as expected. I've even put another video card and the same thing. I ran a test on the components, and everything checks out fine. I'm stumped ?
Click to expand...

Change battery.
 
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Funsize93 said:
Sounds like the System Management Controller chip on the logic board (or another component that links to that chip) is faulty.

https://support.apple.com/en-au/HT204463

Resetting the SMC would generally fix this. If issues persists then its quite clear that the chip or other component is faulty.
Click to expand...
Thanks Funsize93, will try resetting SMC. other than that, the computer never failed me, and always runs smoothly.
 
*UPDATE*, hello everyone, and have a prosperous new year.
Well I strictly use my Mac Pro just for my studio, and I thought I would remove all programs I simply don't need. Facetime, Ical, iTunes, Chess, iMessage, Photo Booth, DVD Player, QuickTime, and all be darn.

The Mac pro will boot up every time, that is crazy !. I wonder what app is causing the problem. ??
 
If it were mine, I would suspect a drive issue, and associated file/system corruption.

I would do a clean install of the OS on a fresh drive (leaving all the default apps). If it behaves itself, add your Apps. one at a time and test after each install.
 
crjackson2134 said:
If it were mine, I would suspect a drive issue, and associated file/system corruption.

I would do a clean install of the OS on a fresh drive (leaving all the default apps). If it behaves itself, add your Apps. one at a time and test after each install.
Click to expand...

Yeah I've done multiple clean O.S. installs, and the behavior was the same. Although I learned to deal with it, by just turning off and on the power strip, and boots normally, and the computer has never failed recording 18tracks at a time for 6 years. But crazy how I was able to remove all the unnecessary app I never used to begin with, and the computer boot up fine (WOW), I bet not even a Mac tech can figure that one out. I also put a new battery in.

I also did put a new drive with a clean install as you mentioned (SSD)
 
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