New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

Start a Discussion

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

macPro 8 core shuts down randomly

Post Reply New Thread Subscribe

Thread Tools

Member Since: Aug 15, 2012
Posts: 1
Dmartin714 is on a distinguished road

Dmartin714 is offline
hello all,

So I currently am running a 2008 MacPro with Snow Leopards as my osx. Recently it started shutting down, not restarting, just turning off. I took it into the apple store and they said it was probably my power supply. Well, $204.00 new power supply, same problem.

I had a Digidesign audio interface plugged in, and a seagate external hd, after reinstalling the OS, unplugging these devices I still get the randome shut downs. Which leads me to believe there IS something up with the computer. All SMC and whatever else has been reset. Ian currently running 10GB of ram, but the computer only recognizes 6gb. Took out the 4gb that were acting up, and still the shut downs happen.

They aren't consistent at all either. The computer can run for 3 days just fine, then on day four it will crash over and over again.

Any suggestions? Graphics card? Logic board?

QUOTE Thanks

Member Since: Feb 25, 2009
Posts: 2,109
Nethfel is a glorious beacon of lightNethfel is a glorious beacon of lightNethfel is a glorious beacon of lightNethfel is a glorious beacon of lightNethfel is a glorious beacon of lightNethfel is a glorious beacon of light
Mac Specs: Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10

Nethfel is offline
If it's hard powering off, my first thought would be that it's overheating. I'd probably check/clean the system of dust and maybe start running something like iStat to keep an eye on your temps. There is always a possibility that your logic board is failing or that you got really unlucky and got a second power supply that was actually bad as well. Do you have any additional internal hardware (aftermarket video cards, other adapter cards, etc.)? Your '08 Mac should have come with a DVD disc that I do believe has AHT on it, if you can find the disc and it does have the Apple Hardware Test, I'd probably try a diagnostic. I'd also do the other standard battery of troubleshooting (check the HD, verify permissions, etc.)

If it's a thermal issue I'd first make sure the comp is clean (really clean, heat sinks blown out, dust blown out from the fans, confirm fans are spinning, etc.) and monitor it really closely.

My Macs: Late 2013 rMBP w/ 750m; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Debian as a server; Apple TV (1080p version)
QUOTE Thanks

Post Reply New Thread Subscribe

« Wireless for old iMac G4? | How do I get maximum resolution? »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread Starter
Last Post
Macbook AIr 10.6.8 shuts down randomly bigbag OS X - Operating System 1 07-21-2012 05:21 PM
Discussions Related to OS X 10.7 Lion schweb News and Community Announcements 3 06-07-2011 10:37 AM
MBP Airport randomly shuts off and wont turn on Kanyeknievel Internet, Networking, and Wireless 2 11-03-2009 05:59 PM

All times are GMT -4. The time now is 08:33 AM.

Powered by vBulletin
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.

Welcome to

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!

(4 digit year)

Already a member?