Macbook Pro automatically logged itself off in the middle of work!

I was working on bookkeeping and out of the blue, my Macbook Pro using 10.5.8 turned black, then the log-in screen appeared! Everything I was working on disappeared! My notes were gone (didn't save because I wasn't going to need them after this) and I was connected to the State of California Board of Equalization filling out an on online use tax form (if that matters).
Bizarre and kinda scary. Stuff like that happens in the PC world. I've been a Mac user for over 20 years and this is the first time this has ever happened.
Any ideas? No, no anti virus software but haven't had any problems either.

Hi grant,
grant*starre wrote:
http://discussions.apple.com/thread.jspa?threadID=2650078&tstart=0
Good find. I was not aware that this was a more widespread issue. If someone finds a solution, I hope you/they will update us here. Thanks

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Sorry but i have bad news
Finally the 30secs trick did not solve anything.
As on threadID=15116 my laptop does not run and charge battery at the same time, resulting of total drain of battery and need to power-off to charge.
Some times on charging batt while powered-off the batt gets disconnected and no charges anymore. You need to unplug all and start again.
When powered-on sometimes battery charges, some times the battery led shuts off and draining start again till full batt is over.
I've ordered a new AC adapter to try to solve the problem, but if no success my laptop will be finally dead as i estimate a full mainboard replacemente costs 510 (from sources on google, not calling oficial customer service).
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My MacBook Pro just turned itself off while installing Windows 7. It has now got a black screen with a white flashing bar in the top left corner...what can I do?

I was just installing windows 7 onto my MacBook Pro. I selected to have 200GB for Windows and the rest leave for Mac.
I clicked install and the bar filled up as it should do. However, once the install had completed, my MacBook turned itself off. I assumed this was normal. Now, my MacBook has a black screen with a white flashing underscore in the top left corner.
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Hold down the Option key when starting up then on the sceen that comes up select Mac OS X to boot from.
The Win 7 install didn't go well and is hung in some way. You should use boot camp assistant to remove the win partition and start over.
Make sure you are using a Retail version of Win 7. A Branded OEM version, like ones from Dell and HP, will NOT work to install Windows 7 on your Mac.

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Hi, my MacBook Pro keeps on randomly shutting itself down along with my charger (as in the light wont show anymore when plugged in). And when it does suddenly shut down, I can't turn my laptop back on unless I do the following: first I detach my charger from my laptop. Second I wait awhile or close my laptop and open it up again then I am able to turn it back on. The next thing I do is if I want my charger to actually work again (its not charging even though I attach it back to my laptop that is turning on), I must first unplug my charger from its outlet and re-plug it in, and that's how it will once again charge my laptop. I have no idea why this keeps on occurring, and it has occurred more often today then it ever had, so much so that I am compelled to ask help from the apple community. Please help me and tell me what should I do. Thank you.

My new MacBook Pro is doing the same thing and I just bought it 11-22-11. I am new to mac, after years on a PC, and I have had mixed messages about whether to use the Mac plugged in once it is fully charged, or use it for hours on the batter and wait for it to run all the way down before charging. When I am fully charged and I am going to be at if for a long time, I find that the screen will go black like it has shut off, keyboard goes black to. Like the person before me asked, if I unplug the power cord from the Mac, the screen comes back. Hmmmm. Do I have a problem with the charger on my Mac? Thanks for helping this Newbee too!

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Sounds like you need a SMC Reset, have a Magsafe issue, perhaps a battery issue. Perhaps a power issue in your location, try another outlet, location or power line.
See #1 here and let it charge overnight.
Step by Step to fix your Mac
If you don't want to deal with the local Apple Authorized Reseller, call Apple/AppleCare and since it's under warranty they will send the machine to one of their Apple Authrized Repair centers.
You can take the machine to a local Apple Store and they will test it too, bring the Magsafe as well, it might be broken or not conecting correctly.

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May 10 22:47:39 localhost com.apple.backupd[71755]: No pre-backup thinning needed: 847.1 MB requested (including padding), 544.51 GB available
May 10 22:47:39 localhost com.apple.backupd[71755]: Waiting for index to be ready (100)
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May 10 22:47:55 localhost com.apple.backupd[71755]: Post-back up thinning complete: 1 expired backups removed
May 10 22:47:55 localhost com.apple.backupd[71755]: Backup completed successfully.
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May 10 22:48:35 localhost com.apple.WebKit.PluginAgent[5203]: 2011-05-10 22:48:35.862 WebKitPluginHost[70507:903] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
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May 10 23:09:07 localhost configd[38]: PMConnection IPConfiguration com.apple.powermanagement.applicationresponse.slowresponse 2772 ms

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http://support.apple.com/kb/HT1776

My Macbook Pro keeps shutting itself off... Why?

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nativenoodle32 wrote:
Is there something specific that I need to take it in for?
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I have just been through a big problem similar to this but mine was shutting down after 40mins.
The reason I said "big" was that I have had the problem when doing large downloads and then having to restart them again only to have it happen again. I had spoken to AppleCare and for more than a year the issue was not resolved.
I was told to take my computer the local 'MacDoctors' and they said they thought it was the Hard Drive and replaced it and then charged me to transfer my data. The data transfer was mucked up (if you don't know what Mucked Up means replace the 'M' with a 'F' and you'll get it) causing more trouble.
It didn't fix the problem but it did mean I couldn't go for a Macca's for a month (kidding - I still went to Maccas but didn't order fries).
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Are kernel panics occurring?
http://support.apple.com/kb/ts3742
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david

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Livin Doll wrote:
I have the same problem and wondered if it was loosey goosey headphones which were just cheap 10 dollars buds. So are you saying I should get new ear phones that fit tighter?
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http://support.apple.com/kb/ts3700
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Macbook Pro automatically logged itself off in the middle of work!

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