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Why does my MacBook Pro turn off several times a day?

my MacBook Pro goes black several times a day. I'm not able to do anything with it then but dead boot it. I do run programs on it that run 24/7 and have to reopen every single one every time i have to reboot. The screen goes black at different times, and lately even sometimes when i'm not switching between windows or open a new window up. PLease help i love my mac but this is getting really frustrating

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ok. Worked at comp most off the day. Reset SMC and PRAM as per examples. After resetting SMC a bit more trouble getting the computer to run did not want to kick back into starting apple icon. Seems fixed now. Then promptly another screen crash. Screen black. Used flashlight, but nothing was visible. The only thing not done is hook the computer up to external monitor. A copy of the trouble report sent to Apple as follows:

I will have to sent it in parts the comment is too long otherwise

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Interval Since Last Panic Report: 163513 sec

Panics Since Last Report: 1

Anonymous UUID: 16A634EF-1433-4BA7-B202-A55AD414B71F

Tue Oct 4 14:07:38 2011

panic(cpu 0 caller 0x9d4c97): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0x7f312000 0x0a5480a2, D0, P2/4

Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)

0x6ce8a188 : 0x21b837 (0x5dd7fc 0x6ce8a1bc 0x223ce1 0x0)

0x6ce8a1d8 : 0x9d4c97 (0xbea22c 0xc5a840 0xbf8f88 0x0)

0x6ce8a278 : 0xaef5db (0x9588404 0x92aa004 0x100 0xcb42b6)

0x6ce8a2c8 : 0xae65d4 (0x92aa004 0x100 0x6ce8a2f8 0x9c4774)

0x6ce8a2f8 : 0x16c8965 (0x92aa004 0x100 0x438004ee 0x6ce8a308)

0x6ce8a438 : 0xb0e258 (0x92aa004 0x957e004 0x0 0x0)

0x6ce8a478 : 0x9dde2b (0x92aa004 0x957e004 0x0 0x0)

0x6ce8a518 : 0x9da50a (0x0 0x9 0x0 0x0)

0x6ce8a6c8 : 0x9dc53e (0x0 0x600d600d 0x702b 0x6ce8a6f8)

0x6ce8a798 : 0xc9feae (0xc1d00041 0xbfef0033 0xbfef0034 0x857c)

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0x6ce8a808 : 0xcaf734 (0x966f600 0x9c8eb80 0x8 0x2)

0x6ce8a828 : 0xcd4322 (0x9c8eb80 0xb 0x6ce8a848 0x2345f4)

0x6ce8a858 : 0xcd4b3d (0x969b000 0x0 0x6ce8a87c 0x0)

0x6ce8a888 : 0xcb4d79 (0x969b000 0x7d1bc080 0x0 0x55)

0x6ce8a8d8 : 0xc76d0c (0x46454000 0x0 0x0 0x3)

0x6ce8a948 : 0xc7640f (0x46454000 0x0 0x2 0x3)

0x6ce8a978 : 0xc6c05f (0x46454000 0x0 0x2 0x463a9000)

0x6ce8aab8 : 0xca55d8 (0x463a9000 0x1 0x6ce8abcc 0x6ce8abc8)

0x6ce8ab68 : 0xc67fe1 (0x463a9000 0x1 0x6ce8abcc 0x6ce8abc8)

0x6ce8abe8 : 0x56da06 (0x463a9000 0x0 0x6ce8ae3c 0x6ce8ac74)

0x6ce8ac38 : 0x56e2a5 (0xcf6720 0x463a9000 0x9b25788 0x1)

0x6ce8ac88 : 0x56eb59 (0x463a9000 0x10 0x6ce8acd0 0x0)

0x6ce8ada8 : 0x286638 (0x463a9000 0x10 0x9b25788 0x1)

0x6ce8be58 : 0x21dbe5 (0x9b25760 0x9f015a0 0x1fd7e8 0x5d43)

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0x6ce8be98 : 0x210a86 (0x9b25700 0x0 0x9339810 0x97199d0)

0x6ce8bef8 : 0x216f84 (0x9b25700 0x0 0x0 0x0)

0x6ce8bf78 : 0x295c57 (0x8f2a568 0x0 0x0 0x0)

0x6ce8bfc8 : 0x2a256d (0x8f2a564 0x1 0x10 0x95e10a4)

Kernel Extensions in backtrace (with dependencies):

com.apple.GeForce(6.3.6)@0xc5c000->0xd12fff

dependency: com.apple.NVDAResman(6.3.6)@0x96e000

dependency: com.apple.iokit.IONDRVSupport(2.2)@0x961000

dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x928000

dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x93f000

com.apple.nvidia.nv50hal(6.3.6)@0x1592000->0x19a6fff

dependency: com.apple.NVDAResman(6.3.6)@0x96e000

com.apple.NVDAResman(6.3.6)@0x96e000->0xc5bfff

dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x928000

dependency: com.apple.iokit.IONDRVSupport(2.2)@0x961000

dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x93f000

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BSD process name corresponding to current thread: WindowServer

Mac OS version:

10K549

Kernel version:

Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386

System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 1943316177650

unloaded kexts:

com.apple.driver.AppleUSBUHCI 4.2.0 (addr 0x142d000, size 0x65536) - last unloaded 120886046009

loaded kexts:

com.apple.driver.AppleHWSensor 1.9.3d0 - last loaded 4040291903

com.apple.filesystems.autofs 2.1.0

com.apple.driver.AppleUSBTCButtons 201.6

com.apple.driver.AGPM 100.12.31

com.apple.driver.AppleMikeyHIDDriver 1.2.0

com.apple.driver.AppleHDA 2.0.5f14

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6 Answers

Chosen Solution

With the history of this machine and information you have given: I would start out by running the diagnostic utilities on your OSx install disk to see what if any trouble codes it gives. Next try hooking it up to an external monitor to see if the screen on it is going black also. I would also take a look at your system logs to see what the operating system is saying about what is going on. Instructions for getting to the log files kept by the system is here. Next I would reset your SMC and PRAM. Instructions for doing that are here and here. What is the sleep indicator doing when the screen goes black? When the screen goes black can you take a flashlight and see anything on the screen, such as the open windows? Does changing the screes brightness up and down at least temporarily let you see what is on the screen again?

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good reply, great troubleshooting procedure +

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1) Take backups with time machine and reinstall OS X. After you installed, setup assistant appears. On Do you alreaddy have a mac screen, choose restore from time machine backup.

2)If reinstalling does not help, have you ever spilled liquids on it? If so, open up your macbook and check the motherboard for any visible corrosion. If you found any corrosion, check this guide: iFixit Liquid Damage Guide

3) Is the hdd showing any signs of failing? Boot from OS X install cd (Hold c key when booting) and go to utilities>Disk utility. From disk utility choose first aid> Verify disk. If problems are found press repair disk.

My compurers go black when hdd is failing, maybe yours does the same.

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I have called apple help line and they have had me do the boot from OS X install cd holding the c key. Did not change anything. I also never spilled anything on the computer. The computer is about 1.5 years old and is on about 24/7 related to gaming programs i run.

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There is one more chance... Take the cover off and clean the dust inside. Dust can cause thermal shutdowns.

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really? wow thanks job for tomorrow will post if it fixes things thanks a lot

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i have just replaced my hard drive and thought all was well. installed all the programs and darn you know it it crashed again yesterday. Have heard peolpe talk about power leads gonna check that out. Love my mac book pro but this is really bothersome

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i am having the same problem fro more than 1 month. applecare told me they are aware of it and engineers are working on it. they dont know when they can say they will havee a solution and for me to hold on..... really terrible. i wan the computer replaced. let me know if you get a fix!

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ABCellars can you walk me through it? my name is not Nick or Solomon sorry

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I do not think you are Nick or Solomon. I think pcmaclinux maybe is.

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I have the same problem , mine is a mid2010 MacBook Pro ...

Apple have released this but the local authorities are not helping me....

http://support.apple.com/kb/TS4088?viewl...

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Hi! Those MBP suffer from a defective GPU. Depending on ur OS it either goes black or restarts & gives u a kernel panic information. See link: http://support.apple.com/kb/TS4088?viewl...

Best regards from Krautland

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inge stothers will be eternally grateful.
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