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I am on my third Macbook in a row that has also done this. There doesn't seem to be any fix for this so I am switching to the Macbook Pro. I haven't heard of this same problem happening with this. If I were you, I would demand a replacement. I highly recoment not waisting your valuable time going through Apple Care for this one.
TRY FOLLOWING TROUBLESHOOTING TIPS.
1.Ensure you have the latest firmware update for macbook that v1.1
2.if you haven't got it download it and when the restarting problem occurs press power buttons when the computer is rebooting keep the buttons pressed until you hear the chime...then install the update.ENSURE ALL DEVICES ARE DISCONNECTED FROM LAPTOP DURING UPDATE OF THE FIRMWARE
3.Try RESEATING the RAM
that should do the trick.... best of luck!!!!!
I posted earlier re this, and (knock on wood), I found the solution on
Basically, close the lid gently and don't move the Mac til its little "heartbeat" light starts pulsing. Kind of annoying, but since I started doing it, no random restarts. Give it a try -- hope it helps.
White MacBook Mac OS X (10.4.9) 2GHz Core 2 Duo, 1GB RAM
Just chiming in with the same problem on three different MacBooks: two Rev. A Core 2 Duos and one Rev. B Core 2 Duo. Since the brick-and-mortar Apple Stores have a fourteen-day “no questions asked” return policy, I keep returning them for replacement. While it hasn’t yielded a decent MacBook yet (as I said, I’m on my third one with the same problem), perhaps it will help someone, or at least help alert Apple to the magnitude of this problem.
MacBook (2007 model with Core 2 Duo @ 2GHz) Mac OS X (10.4.9)
same problem here. i got my macbook in february. i have a black macbook with 2 GHz Intel Core 2 Duo and 1 GB RAM. at one point in march i had a problem where when my computer restart it got stuck on the grey screen w/ the spinny thing. i had to reinstall OSX. then i had a few months without problems. then i guess in may or so i started having this problem. i noticed some people saying they stopped using certain widgets, and i dont even have the dashboard app running.
im just adding myself to the list here.
I have had this happen occasionally and from my research the reason may be that the following series of events occurs:
-MacBook goes into safe sleep mode (SSM)
-During SSM's RAM transfer process the MacBook is moved or bumped
-sudden motion sensor (SMS) is activated
Evidently, the SSM process conflicts with the SMS process which forces a restart in certain situations.
What I have done is disable the SSM feature since it is of limited usefulness to me (it is designed to save the contents of your RAM in case you run out of power or have to change a battery without benefit of a power supply).
Here is more on disabling SSM:
See if this solves your problem.
My Macbook has had this problem from day one - actually this machine is a replacement for macbook #1, which did the same thing. I had #1 for 5 days, and this one is about 2 weeks old now. I see no point in exchanging it, but I wonder about the wear and tear of restarting about 20X more frequently than I usually do.
I've tried disabling SSM, reseating the RAM, disabling bluetooth, and a few other things suggested by technical support. I still get the same one or two unwanted restarts per day. I tried running in safe mode and didn't get it to happen, but it's not reliable enough to draw a conclusion from the 25-30 lid closures I tried. I'm working with a product specialist who is submitting my info to engineering (I run capture data every time it happens). I hope to have an answer. If I find out anything I'll share here.
I have the same problem except mine will also restart spontaneously and randomly when I am operating it. I just clicked on the 'play' button in Keynote to view a slide show I was working on and the computer instantly restarted. I lost unsaved changes I was working on in Keynote and a few other apps (i.e. web pages open in Safari).
My macbook does this too. I have pinned down the cause, but not a solution.
It happens if the laptop is moved while it is in the middle of going into standby. The sudden motion sensor is triggered, and the hard disk halted.
I'm guessing that when it attempts to write the SafeSleep file, it is unable to because the hard disk is parked, and consequently crashes. Not a sane backup option, but possibly the only viable one, I don't know what state the OS is in when it's writing the file.
I'm guessing as the recovery file is the very last thing to be done before entering standby, the OS might not be in a fit state to handle errors, and so does the only thing it can - crash and reboot.
A solution may be possible, but I suspect it's a limitation rather than a bug, so, wait the extra 2 seconds before moving your macbook, kids