Random shutdown: mine too  :-(

my Macbook is also suffering from the random shutdown syndrome, it just started doing that after the last firmware update.
Can I restore it to the old firmware version?
How?
Has that helped anyone here?
Some have suggested that the problem has to do with temperature. I wanted to check this, but a dashboard widget that is supposed to monitor the temperature can't read the temperature (the same widget does display other info about the machine though).
Does anyone else have that problem?
Now what?
Macbook   Mac OS X (10.4.7)  

Pressing the power button 5 sec while you are restarting the computer, will force your system run at half speed (in dual core systems??). But sometimes for me that trick is the only way to get my BlackBook booted. However, it will not reset your PMU. For resetting your PMU:
1. If the computer is on, turn it off.
2. Disconnect the AC Adapter and remove the computer's battery.
3. Press and hold down the power button for 5 seconds and then release the button.
4. Reconnect the battery and AC Adapter.
5. Press the Power button to restart the computer.
G5 Double 2 GHz + MacBook 2 GHz   Mac OS X (10.4.7)  

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  • Random Shutdown - Mac Mini

    I was on my Mini last night, only 3-4 months old, practically new and it simply shut down. Screen went black, light went out and I have not since been able to get it turned back on. I have read a few instances of random shutdown from this board, but none of them seem to be my exact problem because everyone else was able to resolve their problem by plugging and unplugging and simple waiting. I, the next day, am still not able to use my computer. I just got back from being away for two days, the computer was shut off so I don't believe it to be an overheating issue. Could it be a faulty power cable? I welcome any thoughts. Thank you.

    Welcome, Nash2785!
    Since your mini is only 3-4 months old, if you are anywhere near an Apple Store, I'd suggest taking the Mini and power supply in and having the Genius Bar take a look at it. It is covered by a 1-year warranty.

  • To Everyone with Random Shutdowns! (Solved! REALLY!)

    Hey all,
    I had posted about a week back about my Macbook (Core duo white, late 2006), it was having the same symptoms as some of the others with the known random shutdown syndrome (RSS). Like many others I had thought it was the end of my macbook and the logicboard needed replacing because that is what the 'genius' people do, but I was still wondering what would cause it. It would randomly shut off! (or so I thought) I'd be typing in Safari, watching a youtube video, and even playing games, it would just shut off and I could hear the hard drive spin down. I'd restart and it would do it again sometimes right away, sometimes hours later.
    This got me to thinking (like others have said) that it must be an issue with over heating. To test my theory I backed up my HD, and tried to reinstall Snow Leopard after zeroing the HD (as a fresh install). During the install process the Macbook's fan started to get loud and then it happened, it died again! So, this proved to me that it is NOT a software/OS issue at all, which means the said efforts in other posts of changing screen saver and energy saver settings had nothing to do with the cause! Aha moment!
    I thought to myself... something is making it shutdown, obviously, and has to do with too much heat as the fan was going crazy even while reinstalling the OS. After reading many posts on different support forums I came accross the possibility that it could be the heatsink and/or sensor that is attached to it. I also found out that this "RSS" only applies to the non-unibody, core duo, and core 2 duo macbooks... you know what that means?
    These models are the only ones with the shared memory and GPU on the same heatsink! GAH! A possible solution presents itself? To make a long post even longer... I removed the keyboard, carefully unscrewed the heatsink and fan and what did I see? Cracked and dried out thermal paste on the CPU AND GPU, they are both under the same heatsink after all, this was bad, really bad.
    Luckily I had some Arctic Silver thermal paste in a tube from years ago when I upgraded my PowerMac CPU. Using some rubbing alcohol and a soft cloth I removed the crud on the heatsink, processor, and GPU (I might add that there was way too much paste on there in the first place). I waited an extra few minutes to make sure the alcohol evaporated, and then I applied a small (dime sized) amount of thermal past directly onto the two chips, I aligned the heatsink carefully and gave it a very small gentle push down onto the chips, reattached the sensor wire to the mainboard, and screwed the heatsink back in.
    After putting the keyboard back on and making sure all screws were in... I immediately turned on the laptop and reinstalled the OS. The OS install took approximately 10 mintues! (crazy!) The last time I did that it took over 30 mins to install! I was stunned!
    After the OS installed I let the computer idle and shut down, I let it sit for about an hour to allow the paste to contract as it cooled. After starting up again I immediately downloaded Temperature Monitor and installed it (I did have it running when my mac had RSS by the way), here are the results to prove my theory:
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    CPU1 and CPU2 Idle temp - 114 degrees (F)
    Heatsink temp - 128 degrees (F)
    Approximate over heating temp - 184 degrees (F) (causing the heatsink sensor to shutdown the laptop)
    My Macbook with new high quality thermal paste:
    Idle temp of CPU1, CPU2, and GPU - 77 degrees (F)
    Heatsink temp - 84 degrees (F)
    Running temp with adobe CS4, youtube, and typing this message - 103 degrees (F)
    Pretty amazing if you ask me!
    Before I applied the thermal paste my Macbook took at least a minute to start up with a fresh OS install, now it only takes about 15 seconds! I have not heard the fan spin up and go crazy since! And I can't even explain to you how much fast it is now!
    This does prove that Random shutdown syndrome (RSS) is caused ONLY by your GPU over heating due to old thermal paste between the chips and heatsink! A design flaw by Apple? probably not because thermal paste will crack and dry over time.
    This also proves that energy conversion to data in the chips can decrease because of over heating, causing the computer performance to dramatically drop!
    So before you take your out-of-warranty macbook to Apple or a repair shop, see what your internal temp readings are and try to replicate the problem with over heating your CPU/GPU! This was a 10 minute fix! I am still amazed at how much faster everything is, and haven't had a random shutdown since! I hope this helps alot of people that think they are out of luck and have to pay to get it fixed!
    - Cory -

    I too have this problem as well and it has been getting worse lately, I don't know what to do anymore. Here is a little info about my macbookPro. I have the late 2008 unibody model, i bought it in late 2009 Refurbished from Apple. Recently my mac has been turning off out of nowhere. I may be doing something and all of a sudden it just shuts off, it usually happens faster when i start to open up more programs like Photoshop or Final Cut Pro. My mac is out of warranty now and i dont know how much apple is going to charge me to fix it. i mean they want 50 bucks just to talk to them on the phone (ridiculous if you ask me)!.
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    CPU A Temperature Diode: 133F
    Graphics Processor Chip 1: 122F
    Graphics Processor Heatsink 1: 113F
    Graphics Processor Heatsink 2: 126F
    Graphics Processor Temperature Diode: 131F
    Left Palm Rest: 91F
    Main Heatsink 3: 122F
    Main Logic Board: 118F
    Northbridge Chip: 127F
    Northbridge Position: 124F
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      Manufacturer:          GSA-1281
      Device Name:          ASMB016
      Pack Lot Code:          0
      PCB Lot Code:          0
      Firmware Version:          0
      Hardware Revision:          0
      Cell Revision:          0
      Charge Information:
      Charge Remaining (mAh):          3739
      Fully Charged:          No
      Charging:          No
      Full Charge Capacity (mAh):          4610
      Health Information:
      Cycle Count:          68
      Condition:          Normal
      Battery Installed:          Yes
      Amperage (mA):          -1766
      Voltage (mV):          11793
    System Power Settings:
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      System Sleep Timer (Minutes):          0
      Disk Sleep Timer (Minutes):          0
      Display Sleep Timer (Minutes):          90
      Automatic Restart on Power Loss:          No
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Wake on LAN:          No
      Display Sleep Uses Dim:          Yes
      GPUSwitch:          2
      PrioritizeNetworkReachabilityOverSleep:          0
      RestartAfterKernelPanic:          157680000
      Battery Power:
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      Disk Sleep Timer (Minutes):          0
      Display Sleep Timer (Minutes):          2
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Current Power Source:          Yes
      Display Sleep Uses Dim:          Yes
      GPUSwitch:          2
      Reduce Brightness:          Yes
      RestartAfterKernelPanic:          157680000
    Hardware Configuration:
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    AC Charger Information:
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      Charging:          No
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  • Random Shutdown Because of Heat Sensors?

    I bought my white MacBook in mid-May (week 19 production) and it worked fine with the exception of a whine when I did not have the iSight Cam on, the occasional mooing after using the computer heavily then using the CPU lightly for a while, and the discoloration. If you ask me it wasn't that much of a set back because this computer was fast and reliable... or so I had thought!
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    At first I had thought that my external hard drive was the problem and I was very upset that this had happened. I tried to reboot my computer, but all that would happen was the usual DVD drive start up sound and then it would turn off again. I tried about 5 times to restart it with no luck, so I walked away. About 20 minutes later I was able to start it back up...
    After not using my external hard drive for a day, it happened again, in the middle of normal internet browsing and listening to music it randomly shutdown. I thought that maybe it was an OS 10.4.7 issue, because I had not had any problems with x.6, so I erased and restarted from scratch, and once again, another MacDeath. Once again, I thought it to be my fault in my installation of 2Gb of RAM. I re-installed the custom 2x256 RAM that came with the computer ( and will remain in my hands forever, because you can't even pay someone to take away a stick of 256Mb RAM these days) well after the old RAM was forcefully shoved back in, it died again! This is when I started to get mad...
    I put up with the whinning, I put up with the heat, I put up with the discoloration (for a while), but now this? WHY!
    Over the next week it happened almost daily and sometimes when I would turn on my computer after it being off for at least 5 hours, it would load my home screen and after about a minute I would hear the fan come on for a few seconds, and then it would die again. I noticed that most times that my MacBook would shutdown unexpectedly, the fan had just turned on for a few seconds or I was playing a game and the fan was already on...
    So today I called AppleCare and I had to wait about 30 minutes before I talked to someone... (When I called last time about discoloration, the wait was about 5 minutes) So either there are more and more angry customers calling, or Apple is firing employees to increase their stock value...?
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    APPLE USE SOME OF THE 24% SALE INCREASE THIS QUARTER TO HELP YOUR LOYAL CUSTOMERS WHO HAVE BEEN WITH YOU THROUGH THE GOOD AND THE BAD!
    MB 2GHz White 2GB RAM - 250 GB External HD   Mac OS X (10.4.6)  

    As of yet i'm not exactly sure about the heatsink problem, although a few in here have reported machines that work well after having this part replaced, while others who only had the MLB replaced reported a recurrence of the problem.
    as for the volume indicator, i noticed that mine did that too, but it was in fact muted whether or not the tool bar indicated it. i dismissed this as a small quirk, similar to when my volume indicator didnt change as i pressed the volume buttons on my old laptop. but so long as there was an acknowledging "squirt" noise on the computer indicating change of volume, that shouldnt be a problem.
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  • Have any T430x users had random shutdown problems?

    like this one with the T400x model:
    T400s random shutdowns - Lenovo Community
    If not I'll buy a new one, otherwise I'll buy another brand. Thanks!

    Have you run all the newest updates at the new Lenovo update site.  It is up and running and took my computer a while to update including a new bios.
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    My Take:
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  • Heatsink Thermal Paste Random Shutdown Revelation

    Symptom: Random freezes, overheating problems, random shutdowns if pressure not applied to top or bottom of computer
    Solution: Make sure screws are tight!!
    Model: Mid 2007, pre-Unibody
    Screws: The two torx screws under the memory panel
    I've been doing TONS of searching to try and solve a problem with my macbook pro freezing, even at low temperature. I have seen many people that have had VERY similar symptoms as me, and would constantly discuss having to re-apply thermal grease. I have only applied thermal grease once (arctic silver) and was having these problems. As I disassembled it today getting ready to reapply it, I pondered carefully while taking apart my macbook for the billionth time. I thought about the points in which I had to apply pressure in order for my macbook to power on properly and not freeze. When I got to the torx screws, I realized these were responsible for clamping the logic board to the bottom case. It is most likely quite important that they be properly tightened, as these are basically the heatsink-processor mating screws!! There should probably be a torque rating for these, as I would be afraid of tightening them too much and breaking the plastic they screw into. Also, I would alternate back and forth between them.
    I had recently transferred my logic board from my MBP to a used one I purchased which has the defective logic board (I plan to bake some time in the future). There were many reasons I purchased the additional MBP, but it was mostly due to mine being in really bad physical condition (dropped, marked up, material loss on upper case at palm area), having a bad display (I bought a replacement but spilt liquid on it) (also had the keyboard/trackpad disconnect issue, but I frankensteined the connector, which I had broke as well, to ultimately work perfectly again). I had THOUGHT I had another problem with the issues in the subject of this post. I was taking apart my original MBP a lot for my display replacement, as well as memory and hard drive upgrades. That's when I first started getting issues with strange freezes and shutdowns. I believe that this lack of tightening of torx screws was the problem even when my logic board was in my original case. The problem definitely became a lot more frequent when I transferred it to the new/used case and in the process cleaned and re-greased the processors. I had trained myself to not tighten those screws enough, and this was especially bad when the new thermal paste needed to be squished down.
    This has been quite a frustrating issue to deal with for the past 6 months or so. A year ago I purchased a brand new adapter and battery from Apple, and I was fearing that they had gone bad (I have the fraying at the magsafe connector....should have taken better care of it, but it can be repaired). Luckily the only loss from this whole dilemma has been a lot of time and a couple hundred to purchase a 2nd machine used, which was actually a great buy. Hopefully I'll bake the bad logic board and get the 2nd machine up and running some day, at the very least it's spare parts! It is great to have the perfect condition LCD and nice condition case.

    Alright, so I got to the point where I was having the problem nice and consistently. It happened to be when my battery was low on charge (I believe this can happen with a high charge too though...). I experimented with having the battery in and out and was able to reproduce the problem even with the battery removed.
    When I was repeating the shutdown failure (it would happen exactly this way when my computer would freeze during normal or non-use <randomly> and would try to turn it back on) I could turn it on if I was tilting the comp, then I would tilt it back toward resting and it would shut off. I did this with the battery in and out, so I could at least rule the battery out. I then started playing with the top case a bit. I noticed the more I had it removed, the more often it seemed to turn on. I found that bringing the top case down would trigger the shutdown.
    There seems to be some sort of grounding issue. I honestly have never been super careful with pads and tape, so missing one of those might be the cause.

  • Random Shutdown in 2010 for a 2006 Macbook

    Hello-
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    Sure Apple will replace the heat sync. At a price. I may be something else though. It might be full if dust after all these years. You could try putting a vacuum cleaner over the in vent and give it a good sucking. Worked for a friend of mine...

  • Problems with random shutdown after replacing a swollen battery

    Hello all,
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    The WWW is littered with posts from people encountering bugs and crashreports with DVCPROHDAudio.plugin as the main suspect. Most of those posts seem to be from video people rather than audio folks.
    http://www.google.nl/search?q=DVCPROHDAudio.plugin&ie=utf-8&oe=utf-8&aq=t&rls=or g.mozilla:en-US:official&client=firefox-a
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  • Random Shutdowns on a MBP Core Duo, Suggestions/Help would be great

    I've had two random shutdowns of my mac since purchasing it back in August. The first happened on January 11th, when it said it was at 11-12% power. The second happened about two weeks later, at 23% power. I've been looking around these forums and other pages, and haven't really found anything that has helped so far.
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    In the second incident, I only had my browsers open, nothing external plugged in, and my displayed was dimmed to the third darkest level. When it was at about 23% power, it once again randomly shut down. This time, I attempted to turn it back on, and nothing happened. After plugging it into AC power, it turned on and once logged in showed a very low (2-6%) power, so I guess it was reporting the power incorrectly?
    Anyways, went back to look at the battery exchange on Apple's website. I had checked before when they started it, and was pretty sure mine wasn't covered, and a second check confirmed that. My Mac's serial is W8618091VWX, which isn't covered by the recall.
    So, I have a few questions:
    1. Is there a toll-free number I can phone Apple (Canada) at? The only number I've found seems to be only free for those who bought their computer in the last 90 days, which I'm no longer covered by, and haven't been for a while. Talking to someone at Apple would be good.
    2. Otherwise, if I took my computer to an Authorized Service Provider, would they be able to take a look at it and answer some questions? I bought my MBP at a London Drugs and they aren't service providers, so how much would it cost to do this?
    3. Is there a definite cause for these random shutdowns? It seems to vary among other people, so it would be helpful if I could try something to eliminate one of the causes.
    4. Does Tiger report battery levels pretty accurately? In the past when I reached 6% I got a warning and was able to plug it into AC power and had no problems.
    Thanks for any help you can provide.
    Macbook Pro 2.16 GHZ Core Duo, 15.4", 1GB RAM   Mac OS X (10.4.8)  

    I had this problem of RSD fixed for a while after having had the battery replaced by Apple, till yesterday, when the MBP suddenly experienced a shutdown during a meeting presentation, while it was connected to the AC power. At the first restart, as coming back from a stop-mode, for a while appeared a warning of low-battery level, with battery level indicator flashing red and showing the empty icon but with a 86% of charge level and a new shut-down definitely put the MBP out of service, no way to have it functioning again. Obviously, AC power was OK, no problem with the microphone or the projector ( I was at the podium of an international meeting) and a lucky precaution ( double save of the same presentation on a friend's twin MBP, that worked correctly) saved the job.
    Then, a couple of hour later, my MBP started up normally and everything works fine, with or without MAGsafe connected to AC power, almost up to now.
    I've read the post with a link to the procedure for resetting the power controller chip on the mainboard, I'll do it in a minute, hoping that this will help.
    Any further suggestion?
    ambabu, Italy

  • Random Shutdowns (Driving me crazy)

    After owning my MacBook for about a month, just 2 days ago, my MacBook randomly shutdown right after I booted it up. Then when I went to power up again, it immediately shutdown after the ding start-up noise.
    The shutdowns have gotten more frequent and sometimes I have to try about 3 power ups in order for it to stay on.
    Just a note (but I don't think it's related) I installed Windows XP through Bootcamp yesterday, however the shutdowns had already been occuring a day or two BEFORE I installed it.
    I am using upgraded RAM (2x512mb), however it's the RAM that Apple provided me with, and therefore I don't have the stock 512mb original RAM. It was already upgraded the day I got it.
    Other than those two significant changes to my MacBook, nothing else is different.
    Again, note that these shutdowns have occured after owning my MacBook for about a month. (I bought it at the end of July).

    contact apple care. this is a relatively common problem. Either go to an apple store or send in your macbook and they'll fix it. It took them about two days to fix mine and I've had it back about a month now with no problems.

  • 2.5 y/o macbook develops random shutdown?

    Hi,
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    I'm not sure resetting the SMC is good advice, according this article:
    http://support.apple.com/kb/HT1894
    It says only to do it very very specific issues, and random shutdown is not one of them. The article specifically warns against doing it as a troubleshooting measure...

  • MacBook 3x went to service center, still random shutdown, what to do next?

    Hi! Mine is week 17, and mainboard already replaced for 3 times. The last one they replaced the battery also.
    There is no Apple Center in here, I deliver it to the local authorized Apple service.
    I just got my 3rd replacement yesterday, and I noticed from the first place that it got blank gray screen on startup & can't sleep using the Energy Saver. But I waited long enough for the repairement, so I decided to take it home anyway. At home, I did the commandopt+pr and reinstall it back to 10.4.6 using the equiped cd. But still it can't sleep using Energy Saver..
    But the blank gray screen problem is gone.
    Today I calibrate (since they replaced the battery with brand new one), after the process done (5 hours sleep, zero battery), I plugged the magsafe and I heard looping click sound, and it went random shutdown again!
    And it goes shutdown on: yes dev null
    I just do the commandopt+pr, and the yes dev null havn't invoked the shutdown. But from my previous shutdown experiences, it will go crazy random shutdown in about 3 days ahead from now.
    So what to do next? going to the authorized service again?
    I'm sick and tired now.
    Also the outer body case is suffers little scratches, and it's getting mucher and mucher everytime I got it back from repairement.
    Oh dear God do help me! All I want is for my money back, at least a new replacement for my MacBook.
    And they said Apple wouldn't allow it.

    Since you're not actually turning it in to Apple for repair, I wonder if the repair shop that's doing the work knows what they're doing. Since you've had the logic board replaced three times, that's pobably not the solution. I had the random shutdowns and verticle lines on the display, and Apple replaced my heatsink and then erased the HD and re-installed to factory settings, 10.4.6. I then migrated my data from my backup HD, updated OS to 10.4.7, and installed the SMC firmware update. No problems since then.
    Many other users have had their logic board replaced more than once only to continue having the problems. Some have had logic board replaced once and then no longer have problems. Others have had other parts replaced, such as in my case and have had no problems.
    Apparently each MacBook has to be diagnosed individually to find the problem.

  • Another Random Shutdown Thread!

    Hey all
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    Thanks !
    Kasra

    Yeah, I was suprised about that too. I'm sitting outside the Apple Store right now with my replacement. I demonstrated the crash once to the guy by running yes, and then it crashed again on him while he was trying to look at the logs.
    This one's a week 32. I'm currently running yes in two Terminal windows and all seems well. Let's hope it stays this way!
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  • Vista - Sleep FINALLY fixed, still annoying Random Shutdowns

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    SH
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    ... well... that was really a (slap in face) help ??
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    Ignorance is bliss perhaps? or, it is a mixed world? or, there is still software that is not available...
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